Mercer Valve Canada

1.	Tag/PSV Numbers
	Quantity

2.	Type of Pilot (Modulating pilots are not to be used on Compressors)	Snap Modulating

3.	Flange Size, Rating and Type	(RF x RF, RTJ x RF, RTJ x RTJ)

4.	Set Pressure	psi
	Operating Pressure	psi

5.	Back Pressure
	Superimposed	psig Variable Constant
	Built-up	psig

6.	Operating Temperature
	Relieving Temperature

7.	Service Fluid Name (9500 Series is gas service only)

	Required Capacity	(scfm, lb/hr, MMCFPD or etc)
	or
	Orifice Size

	Molecular Weight (MW)
	or
	Specific Gravity (SG)

	Gas Constant (C)
	or
	Ratio of Specific Heats (k)

	Compressibility

7.	Does it Require Sour Gas Trim?	Yes No

8.	Application

9.	Does the valve vent to a common header, flare stack, or closed discharge system? If yes, is there enough back pressure to require a backflow preventer?	Yes No
	Are there any pressure surges/spikes that the valve may see? Does the valve require a pressure snubber?	Yes No
	Does the valve require a field test connection?	Yes No
	Is it for an Offshore Application?	Yes No
	Is the valve in dirty service? Does it require an inlet supply filter?	Yes No
	Is manual blowdown (dome pressure dump valve) required?	Yes No
	Is a test gag for hydrostatic testing required?	Yes No

Forms