Built in conformance to ASME code section / API for air, gas, steam and liquid service

Technical Specification

Valve Size	1/2" to 3" NPT/BSP
Pressure Range	0 to 3000 PSIG
Material	C.S./CF8/CF8M/Alloy stell flat seats for easy maintenance

Technical Specification

Inlet Size	1" x 2" through 10" x 12" ANSI Flanged
Material	C.S./CF8/CF8M/Alloy Steel
Inlet Rating	ANSI Class 150# to 2500#
Orifice Size	Sizes D Through T
Temperature Range	-450 F to 1500 F
Pressure	5 to 3000 PSIG

• Spring loaded safety relief valve
• Full lift pop type design
• Open bonnet with cap & liver
• Close bonnet with liver
• Close bonnet with packed liver

• Metal seat
• Stallited nozzle & dics
• Soft seat with PTFE & Viton
• Bellows seal safety relief valve

Technical Specification

Size	1" x 2" to 8" x 10"
Body	C.I./C.S./CF8/CF8M/Alloy Steel
Trim	C.S./Alloy Steel
Minimum Pressure	20 PSI
Maximum Pressure	20 PSI
Maximum Pressure	3000 PSI
Temperature	200 C

Operating Advantage :

• Bubble-tight closer to set pressure : Series 201 valves operate bubble tight at higher pressure to set pressure ratios, allowing operators to run very close to the system's maximum allowable working pressure. While protecting the system from over pressure, series 201 allows maximum product through put, increased system profitability and reduced fugitive emissions.
• Set pressure and blowdown set at pilot control valve : In line service, settings and blowdown adjustments are completed quickly and easily without main valve intrusion. Subsequent reduction in product loss and fugitive emissions add to system profitability.
• Typical application : The PSV 201 series pilot operated valves are built in conformance to section VIII of the ASME boiler and pressure vessel code for air, gas, vapor and liquid service.

• Design fully in accordance with API 526 for easy interchangeability.
• Complete API 526 range : valve sizes 1" through 8" orifice D through T
• Materials : WCB, WCC, CF8M, Wc6, LCB, LCC, 1.0619 and a wide range of special materials to fulfill the requirements of critical applications. Fool proof design with fewer parts for built-in safety. Open or closed bonnet, packed or plain lifting lever or gas tight cap. Flanged connections according ASME guarantee a worldwide applicability.
• One design and spring (single trim) for steam, gas and liquid applications reduces the number of spare parts and ensures low cost maintenance management.
• One-piece spindle reduces friction which leads to high operation accuracy. Self-draining body design, avoids residues and reduces corrosion. Stellited or hardened metal stealing for longer product life. Soft seat solutions for superior tightness.
• Safety valves present the simple safe solution for heavy duty application, such as crude oil extraction, transportation and processing in Refineries, Chemical Industry, Petrochemical Industry, Oil and Gas onshore and offshore, vessels and piping systems, blow-down systems, storage tank farms.

Intex x Outlet	1 x 2	1 x 2	1½ x 2	1½ x 3	2 X 3	3 X 4	3 X 4	3 X 4	4 x 6	4 x 6	4 x 6	6 x 8	6 x 10	8 x 10
Max. Set Pressure Bar	40	40	40	40	40	40	40	40	40	40	40	40	40	40
Orifice Letter	D	E	F	G	H	J	K	L	M	N	P	Q	R	T
Orifice Dia. mm	14	14	18	22.5	28.3	36	43	53.5	60.3	66	80	105.5	126.5	161.5
Orifice (Area-mm2)	154	154	254	398	629	1018	1452	2248	2856	3421	5027	8742	12568	20.485
Area Sq. in (inch2)	1.111	0.196	0.324	0.506	0.801	1.296	1.849	2.863	3.637	4.357	6.401	11.132	16.004	26.085