Master Catalog>>Carburetion- Alternate Fuels Carburetion>>Pop Action Pressure Relief Valves, Hydrostatic Relief Valves >>Page P-11


Fully Internal "Pop-Action" Pressure Relief Valves for Motor Fuel Containers

8543 Series relief valves are designed for use as a primary relief valve inlarger ASME motor fuel containers such as on buses, trucks and construction equipment. 8544 Series relief valves are designed for use as a primary relief valve in smaller ASME and DOT motor fuel containers such as on tractors, lift trucks, cars and taxicabs.

Part Number Container Type Start to Discharge Setting (PSIG) Container Connection

M. NPT

 Overall Height (approx.) Height Above Coupling (approx.) Hex Wrenching Section Flow Capacity SCFM / Air*** Protective Cap (Included) Accessories Order
UL (at 120% of Set Pressure) ASME (at 120% of Set Pressure) Pipeaway Adapter
8544G ASME 250 1" 5 7/16"  7/8"  1 5/16"  1,020 936 7544-41 7544-11A*
8543G 1 1/4"  1 11/16"  1,465 1,400 7543-40C 7543-10**
8544T 312 1" 1 5/16"  1,282 1,158 7544-41 7544-11A*
8543T 1 1/4"  1 11/16"  1,990 1,731 7543-40C 7543-10**
8544K DOT / ASME 375 1" 1 5/16"  1,545*** --- 7544-41 7544-11A*

* 1" M. NPT outlet connection.

** 1 1/4" M. NPT outlet connection.

*** Rating also applies to DOT requirements.

**** Flow rates shown are for bare relief valves. Adapters and pipeaway will reduce flow as discussed in forewording information.

7543-10

 

7544-11A

Fully Internal "Pop-Action" Pressure Relief Valves for DOT Fork Lift Cylinders

Designed specifically for use as a primary relief valve on forklift cylinders, the 8545AK reduces the possibility of improper functioning of the relief mechanism due to foreign material build up. All guides, springs, stem and adjusting components are located inside the cylinder - removed from the direct exposure of foreign materials and debris from the atmosphere. 

NFPA Pamphlet #58 requires that: "All containers used in industrial truck (including forklift truck cylinders) service shall have the container pressure relief valve replaced by a new or unused valve within 12 years of the date of manufacture of the container and each 10 years thereafter."

Part Number Container Type Start to Discharge Setting (PSIG) Container Connection M. NPT Flow Capacity SCFM / Air** Accessories (Order Separately) Order
(ECII Rated at 480 PSIG) Protective Cap (Included) Deflectors***

45° Elbow

 90° Elbow
8545AK DOT 375  3/4"  400* 7545-40 7545-14A 7545-12

* Classified by U.L. in accordance with Compressed Gas Association Pamphlet S-1.1 Pressure Device Standards for Cylinders.

Meets requirements for use on DOT containers with 262 pounds or less weight of water or 109 pounds or less of LP-Gas.

** Flow rates are shown for bare relief valves. Adapters and pipeaways will reduce flow as discussed in forewording information.

*** Order protective cap #8545-41 or 7545-40.

 

7545-12 

90° Adapter

 

7545-14A 45° Adapter

External Hydrostatic Relief Valves  

Designed especially for the protection of piping and shut-off valves where there is a possibility of trapping liquid LP-Gas. Install  in pipelines and hoses located between shut-off valves or in the side boss of RegOŽ shut-off valves. Brass valve body material. 

Part Number 

Start to Discharge Setting (PSIG) 

Container Connection M. NPT 

Height (approx.) 

Wrench Hex Section 

Accessories 

 Order

Protective Cap 

3127J 

350 

1/4" 

1 31/32" 

7/8" 

7545-40 

3127K 

375 

3125L 

400 

1 9/16" 

5/8" 

Included 

3127L 

1 31/32"

1 31/32" 

7/8" 

 7545-40

Master Catalog>>Carburetion- Alternate Fuels Carburetion>>Pop Action Pressure Relief Valves, Hydrostatic Relief Valves >>Page P-11