Re: Use of Set Screw Type Restraint Fire Pump Suction and Discharge

[Bruce Verhei]

I'd ask the manufacturer what their position is.

Best.

> On Dec 16, 2016, at 11:08,   
> wrote:
> 
> Good information, do you have any forensic statistics on these failures that 
> would give an indication of the cause of the failure? Improper installation, 
> rust/corrosion, produce defect?
> Mark at Aero
> 602 820-7894
>  
>  
> From: Sprinklerforum [mailto:sprinklerforum-boun...@lists.firesprinkler.org] 
> On Behalf Of Top Myers
> Sent: Friday, December 16, 2016 11:44 AM
> To: sprinklerforum@lists.firesprinkler.org
> Subject: RE: Use of Set Screw Type Restraint Fire Pump Suction and Discharge
>  
> Over the years, we have had a number of Uniflange claims.  Same with some of 
> their competitors which are import.  The rating of 25,000 is based on perfect 
> conditions and when installed in front of system with water flow upstream the 
> water often runs for a long time before noticed. I support Dan Arnolds 
> observation.
>  
> Top Myers
> Myers Risk Services
> 2102 Kimberton Road, Unit 741
> Kimberton, PA 19442
> (484) 924-8155   Cell 610-952-0965
> t...@myersrisk.com
>  
> Providing Solutions For Your Risk Management Needs
>  
> From: Sprinklerforum [mailto:sprinklerforum-boun...@lists.firesprinkler.org] 
> On Behalf Of Daniel Arnold
> Sent: Friday, December 16, 2016 11:48 AM
> To: sprinklerforum@lists.firesprinkler.org
> Subject: RE: Use of Set Screw Type Restraint Fire Pump Suction and Discharge
>  
> Bill:
>  
> I have seen separations of these style flanges in situations as you describe 
> and others. Personally, I do not spec/use them without rods but there are 
> many, many out there.  
>  
> (Did not sign my prior post…. Apologies,)
>  
> Dan Arnold
> Seneca Fire Engineering, LLC
>  
>  
> 
> On Dec 16, 2016, at 8:30 AM, "mphe...@aerofire.com"  
> wrote:
> 
> Hi Bill,
> If you look up the technical data sheet on a "Uniflange" you'll find that 
> this device has a rated holding strength in the 25,000 pound range based on 
> the pipe diameter. They are commonly used out here in the Wild West. We have 
> never seen a failure on a properly installed device. 
> 
> Mark at Aero
> 602 820-7894
>  
> Sent from my iPhone
> 
> On Dec 16, 2016, at 6:20 AM, Bill Brooks  wrote:
> 
> A case came up today about the use of a “mechanical joint wedge action 
> restraint” on the suction and discharge side of a diesel driven pump.  
> Someone accepted a change and eliminated the rods, then put a MJWAC at the 
> top of the ductile pipe on each side of the pump.  A commissioning agent has 
> refused to start the pump based on the concern the restraint will “wiggle” 
> off the end of the ductile under repeated pump operation either during the 
> acceptance test or sometime later.
>  
> Is this a creative use of this type restraint, or is it a totally bad idea?  
> By the way, the underground elbow is a restrained type mechanical joint.
>  
> Thanks
>  
> Bill Brooks
> Brooks Fire Protection Engineering Inc.
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Re: 1.85 Graph

[Brad Casterline]

Whatever you say Cecil.
I only know four things:
1) You fleshed me out
2) George fleshed me
3) Steve fleshed me out
4) Pops fleshed me out-- was the first and best in fact. I signed on after
having lurked for 8 months.
"I like what Brad has to say here", he said.

He had me after Brad.

Brad.
On Dec 16, 2016 7:51 PM, "Sprinkler Academy - C Bilbo" <
prodesigngr...@msn.com> wrote:

> Seriously, Brad?  Some things are funny (and out of the public eye,
> this is hilarious.) but come on dude.  Professor Greenman deserves a
> modicum of respect ( at the VERY LEAST).
>
>
> And, yo.  George L Church rules.  Never Wrong, Always Wong.
>
>
>
>
> It should be recognized that the above is my opinion as a member of the
> NFPA, and has not been processed as a formal interpretation in accordance
> with the NFPA Regulations Governing Committee Projects and should therefore
> not be considered, nor relied upon, as the official position of the the
> NFPA, nor any of their technical committees.
>
> Sincerely,
>
>
> Cecil Bilbo
> Academy of Fire Sprinkler Technology
> Champaign, IL
> 217.607.0325 <(217)%20607-0325>
> www.sprinkleracademy.com
> ce...@sprinkleracademy.com
> OUR STUDENTS SAVE LIVES!!
>
>
>
> --
> *From:* Sprinklerforum 
> on behalf of Brad Casterline 
> *Sent:* Friday, December 16, 2016 7:19 PM
> *To:* sprinklerforum@lists.firesprinkler.org
> *Subject:* Re: 1.85 Graph
>
>
> OK Pops
> On Dec 15, 2016 12:02 PM, "rongreenman ."  wrote:
>
>> Taking up the George Church clarion call: If you are an AFSA member this
>> and a myriad of other useful forms and reports and good stuff are available
>> to you on the AFSA website. If you are not a member you cannot access those
>> forms and you are really taking advantage of the generosity of the AFSA and
>> it's paying members who are  making this forum available to all and to the
>> many members who take the time to discuss issues with all the forum
>> followers, on their own time, for free. If any of you out there aren't
>> members you owe it to your industry, and yourselves to join. and join your
>> local chapter or affiliate if there is one in your area. To paraphrase a
>> famous ad campaign, "The benefits of membership"
>>
>> On Thu, Dec 15, 2016 at 9:24 AM, Brad Casterline 
>> wrote:
>>
>>> Another web based graph (among other utilities here):
>>>
>>> https://www.fsc-icalc.com/
>>>
>>> Brad
>>> On Dec 7, 2016 8:30 AM,  wrote:
>>>
 Does anyone have a blank 1.85 graph form you can send me?

 Much appreciated.

 Bill Menster
 WFM Consulting Inc.
 2416 Malaya Ct.
 Punta Gorda, FL 33983
 ph. 941-421-9786 <(941)%20421-9786>
 fax 941-391-6133 <(941)%20391-6133>
 wmens...@comcast.net
 www.wfmconsultinginc.com


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 Sprinklerforum@lists.firesprinkler.org
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 iresprinkler.org


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>>> iresprinkler.org
>>>
>>>
>>
>>
>> --
>> Ron Greenman
>>
>> rongreen...@gmail.com
>>
>> 253.576.9700 <(253)%20576-9700>
>>
>> The Universe is monstrously indifferent to the presence of man. -Werner
>> Herzog, screenwriter, film director, author, actor and opera
>> director (1942-)
>>
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>>
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Re: 1.85 Graph

[Sprinkler Academy - C Bilbo]

Seriously, Brad?  Some things are funny (and out of the public eye, this is 
hilarious.) but come on dude.  Professor Greenman deserves a modicum of 
respect ( at the VERY LEAST).


And, yo.  George L Church rules.  Never Wrong, Always Wong.




It should be recognized that the above is my opinion as a member of the NFPA, 
and has not been processed as a formal interpretation in accordance with the 
NFPA Regulations Governing Committee Projects and should therefore not be 
considered, nor relied upon, as the official position of the the NFPA, nor any 
of their technical committees.

Sincerely,


Cecil Bilbo
Academy of Fire Sprinkler Technology
Champaign, IL
217.607.0325
www.sprinkleracademy.com
ce...@sprinkleracademy.com
OUR STUDENTS SAVE LIVES!!




From: Sprinklerforum  on behalf 
of Brad Casterline 
Sent: Friday, December 16, 2016 7:19 PM
To: sprinklerforum@lists.firesprinkler.org
Subject: Re: 1.85 Graph


OK Pops

On Dec 15, 2016 12:02 PM, "rongreenman ." 
> wrote:
Taking up the George Church clarion call: If you are an AFSA member this and a 
myriad of other useful forms and reports and good stuff are available to you on 
the AFSA website. If you are not a member you cannot access those forms and you 
are really taking advantage of the generosity of the AFSA and it's paying 
members who are  making this forum available to all and to the many members who 
take the time to discuss issues with all the forum followers, on their own 
time, for free. If any of you out there aren't members you owe it to your 
industry, and yourselves to join. and join your local chapter or affiliate if 
there is one in your area. To paraphrase a famous ad campaign, "The benefits of 
membership"

On Thu, Dec 15, 2016 at 9:24 AM, Brad Casterline 
> wrote:

Another web based graph (among other utilities here):

https://www.fsc-icalc.com/

Brad

On Dec 7, 2016 8:30 AM, > 
wrote:
Does anyone have a blank 1.85 graph form you can send me?

Much appreciated.


Bill Menster
WFM Consulting Inc.
2416 Malaya Ct.
Punta Gorda, FL 33983
ph. 941-421-9786
fax 941-391-6133
wmens...@comcast.net
www.wfmconsultinginc.com


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--
Ron Greenman

rongreen...@gmail.com

253.576.9700

The Universe is monstrously indifferent to the presence of man. -Werner Herzog, 
screenwriter, film director, author, actor and opera director (1942-)

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Re: 1.85 Graph

[Brad Casterline]

OK Pops
On Dec 15, 2016 12:02 PM, "rongreenman ."  wrote:

> Taking up the George Church clarion call: If you are an AFSA member this
> and a myriad of other useful forms and reports and good stuff are available
> to you on the AFSA website. If you are not a member you cannot access those
> forms and you are really taking advantage of the generosity of the AFSA and
> it's paying members who are  making this forum available to all and to the
> many members who take the time to discuss issues with all the forum
> followers, on their own time, for free. If any of you out there aren't
> members you owe it to your industry, and yourselves to join. and join your
> local chapter or affiliate if there is one in your area. To paraphrase a
> famous ad campaign, "The benefits of membership"
>
> On Thu, Dec 15, 2016 at 9:24 AM, Brad Casterline 
> wrote:
>
>> Another web based graph (among other utilities here):
>>
>> https://www.fsc-icalc.com/
>>
>> Brad
>> On Dec 7, 2016 8:30 AM,  wrote:
>>
>>> Does anyone have a blank 1.85 graph form you can send me?
>>>
>>> Much appreciated.
>>>
>>> Bill Menster
>>> WFM Consulting Inc.
>>> 2416 Malaya Ct.
>>> Punta Gorda, FL 33983
>>> ph. 941-421-9786 <(941)%20421-9786>
>>> fax 941-391-6133 <(941)%20391-6133>
>>> wmens...@comcast.net
>>> www.wfmconsultinginc.com
>>>
>>>
>>> ___
>>> Sprinklerforum mailing list
>>> Sprinklerforum@lists.firesprinkler.org
>>> http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-f
>>> iresprinkler.org
>>>
>>>
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>> http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-
>> firesprinkler.org
>>
>>
>
>
> --
> Ron Greenman
>
> rongreen...@gmail.com
>
> 253.576.9700 <(253)%20576-9700>
>
> The Universe is monstrously indifferent to the presence of man. -Werner
> Herzog, screenwriter, film director, author, actor and opera
> director (1942-)
>
> ___
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> org
>
>
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Viking VK546 1 1/4" 11.2K ELO

[321]

I have 54: Viking VK546 1 1/4" 11.2 K ELO 205* F 18" Dry Pendents left over 
from my cooler job that Viking will not credit me for. I also have the 
Insulating Rings for these.
These are Standard Response 205* that can be used in Freezers that have 
Evaporators that go through a automatic Defrost Cycle.
Anyone have a Freezer/Cooler job coming up that needs these ? 
John W. FarabeeVP Fire Sprinkler DivisionAtlantic Realty and Building, 
LLCJupiter, Fl561-707-5150Florida License No.FPC16-000106
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RE: Use of Set Screw Type Restraint Fire Pump Suction and Discharge

[MPhelps]

Good information, do you have any forensic statistics on these failures that 
would give an indication of the cause of the failure? Improper installation, 
rust/corrosion, produce defect?
Mark at Aero
602 820-7894


From: Sprinklerforum [mailto:sprinklerforum-boun...@lists.firesprinkler.org] On 
Behalf Of Top Myers
Sent: Friday, December 16, 2016 11:44 AM
To: sprinklerforum@lists.firesprinkler.org
Subject: RE: Use of Set Screw Type Restraint Fire Pump Suction and Discharge

Over the years, we have had a number of Uniflange claims.  Same with some of 
their competitors which are import.  The rating of 25,000 is based on perfect 
conditions and when installed in front of system with water flow upstream the 
water often runs for a long time before noticed. I support Dan Arnolds 
observation.

Top Myers
Myers Risk Services
2102 Kimberton Road, Unit 741
Kimberton, PA 19442
(484) 924-8155   Cell 610-952-0965
t...@myersrisk.com

Providing Solutions For Your Risk Management Needs

From: Sprinklerforum [mailto:sprinklerforum-boun...@lists.firesprinkler.org] On 
Behalf Of Daniel Arnold
Sent: Friday, December 16, 2016 11:48 AM
To: 
sprinklerforum@lists.firesprinkler.org
Subject: RE: Use of Set Screw Type Restraint Fire Pump Suction and Discharge

Bill:

I have seen separations of these style flanges in situations as you describe 
and others. Personally, I do not spec/use them without rods but there are 
many, many out there.

(Did not sign my prior post Apologies,)

Dan Arnold
Seneca Fire Engineering, LLC



On Dec 16, 2016, at 8:30 AM, 
"mphe...@aerofire.com" 
> wrote:
Hi Bill,
If you look up the technical data sheet on a "Uniflange" you'll find that this 
device has a rated holding strength in the 25,000 pound range based on the pipe 
diameter. They are commonly used out here in the Wild West. We have never seen 
a failure on a properly installed device.

Mark at Aero
602 820-7894

Sent from my iPhone

On Dec 16, 2016, at 6:20 AM, Bill Brooks 
> wrote:
A case came up today about the use of a "mechanical joint wedge action 
restraint" on the suction and discharge side of a diesel driven pump.  Someone 
accepted a change and eliminated the rods, then put a MJWAC at the top of the 
ductile pipe on each side of the pump.  A commissioning agent has refused to 
start the pump based on the concern the restraint will "wiggle" off the end of 
the ductile under repeated pump operation either during the acceptance test or 
sometime later.

Is this a creative use of this type restraint, or is it a totally bad idea?  By 
the way, the underground elbow is a restrained type mechanical joint.

Thanks

Bill Brooks
Brooks Fire Protection Engineering Inc.
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RE: Use of Set Screw Type Restraint Fire Pump Suction and Discharge

[Top Myers]

Over the years, we have had a number of Uniflange claims.  Same with some of 
their competitors which are import.  The rating of 25,000 is based on perfect 
conditions and when installed in front of system with water flow upstream the 
water often runs for a long time before noticed. I support Dan Arnolds 
observation.

Top Myers
Myers Risk Services
2102 Kimberton Road, Unit 741
Kimberton, PA 19442
(484) 924-8155   Cell 610-952-0965
t...@myersrisk.com

Providing Solutions For Your Risk Management Needs

From: Sprinklerforum [mailto:sprinklerforum-boun...@lists.firesprinkler.org] On 
Behalf Of Daniel Arnold
Sent: Friday, December 16, 2016 11:48 AM
To: sprinklerforum@lists.firesprinkler.org
Subject: RE: Use of Set Screw Type Restraint Fire Pump Suction and Discharge

Bill:

I have seen separations of these style flanges in situations as you describe 
and others. Personally, I do not spec/use them without rods but there are 
many, many out there.

(Did not sign my prior post Apologies,)

Dan Arnold
Seneca Fire Engineering, LLC



On Dec 16, 2016, at 8:30 AM, 
"mphe...@aerofire.com" 
> wrote:
Hi Bill,
If you look up the technical data sheet on a "Uniflange" you'll find that this 
device has a rated holding strength in the 25,000 pound range based on the pipe 
diameter. They are commonly used out here in the Wild West. We have never seen 
a failure on a properly installed device.

Mark at Aero
602 820-7894

Sent from my iPhone

On Dec 16, 2016, at 6:20 AM, Bill Brooks 
> wrote:
A case came up today about the use of a "mechanical joint wedge action 
restraint" on the suction and discharge side of a diesel driven pump.  Someone 
accepted a change and eliminated the rods, then put a MJWAC at the top of the 
ductile pipe on each side of the pump.  A commissioning agent has refused to 
start the pump based on the concern the restraint will "wiggle" off the end of 
the ductile under repeated pump operation either during the acceptance test or 
sometime later.

Is this a creative use of this type restraint, or is it a totally bad idea?  By 
the way, the underground elbow is a restrained type mechanical joint.

Thanks

Bill Brooks
Brooks Fire Protection Engineering Inc.
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RE: Use of Set Screw Type Restraint Fire Pump Suction and Discharge

[Daniel Arnold]

Bill:

I have seen separations of these style flanges in situations as you describe 
and others. Personally, I do not spec/use them without rods but there are 
many, many out there.

(Did not sign my prior post Apologies,)

Dan Arnold
Seneca Fire Engineering, LLC



On Dec 16, 2016, at 8:30 AM, 
"mphe...@aerofire.com" 
> wrote:
Hi Bill,
If you look up the technical data sheet on a "Uniflange" you'll find that this 
device has a rated holding strength in the 25,000 pound range based on the pipe 
diameter. They are commonly used out here in the Wild West. We have never seen 
a failure on a properly installed device.

Mark at Aero
602 820-7894

Sent from my iPhone

On Dec 16, 2016, at 6:20 AM, Bill Brooks 
> wrote:
A case came up today about the use of a "mechanical joint wedge action 
restraint" on the suction and discharge side of a diesel driven pump.  Someone 
accepted a change and eliminated the rods, then put a MJWAC at the top of the 
ductile pipe on each side of the pump.  A commissioning agent has refused to 
start the pump based on the concern the restraint will "wiggle" off the end of 
the ductile under repeated pump operation either during the acceptance test or 
sometime later.

Is this a creative use of this type restraint, or is it a totally bad idea?  By 
the way, the underground elbow is a restrained type mechanical joint.

Thanks

Bill Brooks
Brooks Fire Protection Engineering Inc.
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Re: Tenant improvement

[aaron rohr]

8.15.20.5 Revamping___
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Re: 13R systems

[Bruce Verhei]

It is normal for commercial parking garage to be open. The building code 
requires either this or mechanical ventilation to exhaust automobile fumes. 

> On Dec 15, 2016, at 13:58, Steve Leyton  wrote:
> 
> CORRECT, no reduction for QA here.  Instead, please make check for sales tax 
> on larger pipe size payable to Franchise Tax Board, Sacramento CA.
>  
> SL
>  
> From: Sprinklerforum [mailto:sprinklerforum-boun...@lists.firesprinkler.org] 
> On Behalf Of Rocci Cetani 3
> Sent: Thursday, December 15, 2016 1:55 PM
> To: sprinklerforum@lists.firesprinkler.org
> Subject: RE: 13R systems
>  
> 1 large universal parking area 40’x80’,  garage is separated from residential 
> portion by a 1 hour rated wall. (Not a separate building just a 1 hour wall) 
> Sounds like OH1 it is and thanks to the great state of California no area 
> reduction for me. J
>  
> Thanks Steve
>  
> Rocci Cetani III, CET
> Designer
> Water-Based Fire Protections Systems Layout, Nicet Level III
>  
> Northern California Fire Protection Services Inc.
> 16840 Joleen Way Bldg. A
> Morgan Hill, CA 93037
> P-(408) 776-1580 EXT.111
> F-(408) 776-1590
>  
>  
> roc...@norcalfire.com
> www.norcalfire.com
>  
> CONFIDENTIALITY NOTICE: This message and any document accompanying it may 
> contain confidential information
> belonging to the sender. The information is intended only for the use of 
> individual or entity named above. If you are not the intended recipient, or 
> the employee or agent responsible to deliver this message to the intended 
> recipient, you are hereby notified that any disclosure, copying or taking of 
> any action in reliance on the contents of this information is strictly 
> prohibited. If you have received this transmission in error, please 
> immediately notify us by telephone to arrange for return of the documents.
>  
> From: Sprinklerforum [mailto:sprinklerforum-boun...@lists.firesprinkler.org] 
> On Behalf Of Steve Leyton
> Sent: Thursday, December 15, 2016 1:04 PM
> To: sprinklerforum@lists.firesprinkler.org
> Subject: RE: 13R systems
>  
> First, since carports aren’t addressed in 13R, I think you have to call it a 
> “garage”.   Next, is this one universal parking area or is it 
> compartmentalized into spaces less than 500 sq. ft. (NFPA 13R, 7.2.3.1 and 
> 7.2.4.1)?  Then, are the walls separating it from other compartments rated?  
> 30 minutes?  One-hour?  Or, is there a building separation that would trigger 
> full NFPA 13 (7.3.1)?   Assuming a larger compartment, it’ll probably boil 
> down to OH1 per NFPA 13 with area reduction allowed for QR sprinklers.
>  
> Steve L.
>  
> From: Sprinklerforum [mailto:sprinklerforum-boun...@lists.firesprinkler.org] 
> On Behalf Of Rocci Cetani 3
> Sent: Thursday, December 15, 2016 12:54 PM
> To: sprinklerforum@lists.firesprinkler.org
> Subject: 13R systems
>  
> I have a 3 story apartment building, 1st floor has 4 units and a parking 
> area. 2nd and 3rd floors each have 6 units. The Parking area is on the far 
> end of the building under 2 of the 2nd floor units. The parking area has a 1 
> hr rated wall and door that leads to the 4 units on the 1st floor. In my 
> opinion this isn’t really a garage because it’s completely open on one side, 
> I look at it more as a carport (please correct me if im wrong)…… I believe I 
> should be using section 7.2.2 (13R 2013) where it states  “ the design 
> discharge and design area criteria for area protected by quick response 
> sprinklers shall comply with NFPA 13.”  I’m unsure if this is directing me to 
> calc at OH1 .15/1500 because its automobile parking or if it saying to calc 
> at a .10 over 4 sprinklers  per NFPA 13 11.3 ( not sure this section even 
> applies because 13R 6.4.7 doesn’t say carports fall under the category where 
> residential sprinklers can be used outside dwelling units. I design maybe 2 
> residential projects every year so I’m not as in tune with residential 
> standards as I should be.  Any guidance is much appreciated.
>  
> Thank you!
>  
>  
> Rocci Cetani III, CET
> Designer
> Water-Based Fire Protections Systems Layout, Nicet Level III
>  
> Northern California Fire Protection Services Inc.
> 16840 Joleen Way Bldg. A
> Morgan Hill, CA 93037
> P-(408) 776-1580 EXT.111
> F-(408) 776-1590
>  
>  
> roc...@norcalfire.com
> www.norcalfire.com
>  
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Re: Use of Set Screw Type Restraint Fire Pump Suction and Discharge

[Daniel Arnold]

Bill:

I have seen separations of these styleflanges in situations as you describe 
and others. Personally, I do not spec/use them without rods but there are 
many many out there.

On Dec 16, 2016, at 8:30 AM, 
"mphe...@aerofire.com" 
> wrote:

Hi Bill,
If you look up the technical data sheet on a "Uniflange" you'll find that this 
device has a rated holding strength in the 25,000 pound range based on the pipe 
diameter. They are commonly used out here in the Wild West. We have never seen 
a failure on a properly installed device.

Mark at Aero
602 820-7894

Sent from my iPhone

On Dec 16, 2016, at 6:20 AM, Bill Brooks 
> wrote:

A case came up today about the use of a “mechanical joint wedge action 
restraint” on the suction and discharge side of a diesel driven pump.  Someone 
accepted a change and eliminated the rods, then put a MJWAC at the top of the 
ductile pipe on each side of the pump.  A commissioning agent has refused to 
start the pump based on the concern the restraint will “wiggle” off the end of 
the ductile under repeated pump operation either during the acceptance test or 
sometime later.

Is this a creative use of this type restraint, or is it a totally bad idea?  By 
the way, the underground elbow is a restrained type mechanical joint.

Thanks

Bill Brooks
Brooks Fire Protection Engineering Inc.
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Re: Use of Set Screw Type Restraint Fire Pump Suction and Discharge

[MPhelps]

Hi Bill,
If you look up the technical data sheet on a "Uniflange" you'll find that this 
device has a rated holding strength in the 25,000 pound range based on the pipe 
diameter. They are commonly used out here in the Wild West. We have never seen 
a failure on a properly installed device.

Mark at Aero
602 820-7894

Sent from my iPhone

On Dec 16, 2016, at 6:20 AM, Bill Brooks 
> wrote:

A case came up today about the use of a "mechanical joint wedge action 
restraint" on the suction and discharge side of a diesel driven pump.  Someone 
accepted a change and eliminated the rods, then put a MJWAC at the top of the 
ductile pipe on each side of the pump.  A commissioning agent has refused to 
start the pump based on the concern the restraint will "wiggle" off the end of 
the ductile under repeated pump operation either during the acceptance test or 
sometime later.

Is this a creative use of this type restraint, or is it a totally bad idea?  By 
the way, the underground elbow is a restrained type mechanical joint.

Thanks

Bill Brooks
Brooks Fire Protection Engineering Inc.
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Use of Set Screw Type Restraint Fire Pump Suction and Discharge

[Bill Brooks]

A case came up today about the use of a “mechanical joint wedge action 
restraint” on the suction and discharge side of a diesel driven pump.  Someone 
accepted a change and eliminated the rods, then put a MJWAC at the top of the 
ductile pipe on each side of the pump.  A commissioning agent has refused to 
start the pump based on the concern the restraint will “wiggle” off the end of 
the ductile under repeated pump operation either during the acceptance test or 
sometime later.

 

Is this a creative use of this type restraint, or is it a totally bad idea?  By 
the way, the underground elbow is a restrained type mechanical joint.

 

Thanks

 

Bill Brooks

Brooks Fire Protection Engineering Inc.

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