Mark 501/502 High Flow Back Pressure Regulator

Mark 501 Series High Flow Back Pressure Regulator

Mark 502 Series High Flow Back Pressure Regulator

We aim to respond within 1 hour

Used for applications requiring higher Cv/Kv ratings without a higher line size.
Mark 501 has Cv’s up to 50 while the 502 has Cv’s as high as 70.
Sliding gate seat leads to less noise and improved durability.

The Mark 501 and 502 are designed to be used for applications that do not want the next highest line size but need a high Cv rating. Cv rating up to 70 can be achieved by the high flow Mark 502.

A self-operated sliding gate seat provides less turbulence and noise during use. A shorter stroke than a plug or globe design supplies a faster response as well as less build-up.

Body and trim materials

Available sizes are 1-½" and 2" and body materials that are used in construction include ductile iron, bronze, carbon steel and stainless steel. Trim materials for 303SST comes for standard on ductile iron, Bronze, Carbon steel valves and for 316SST as standard for stainless steel valves.

End connections

End connections are threaded (FNPT, BSPT, BSPP), ANSI flanges (150#, 300#) and DIN flanges (PN10/16, PN25/40). The diaphragm is manufactured from stainless steel as standard but can be Buna-N, Jorlon or Viton.

Shutoff and setpoint ranges

The shutoff is ANSI Class IV and both the Mark 501 and 502 have been ATEX certified. The setpoint ranges between 0.03 bar and 10.3bar.

Key specifications

Sizes	1-1/2" & 2" (DN40 & DN50)
End connections	Threaded (FNPT, BSPT, BSPP) ANSI Flanges (150#, 300#) DIN Flanges (PN10/16, PN25/40)
Body materials	Ductile Iron, Bronze, Carbon Steel (A216 WCB), Stainless Steel (A351/CF8M)
Trim materials	303SST — Standard on Ductile Iron, Bronze, Carbon Steel valves 316SST — Standard on Stainless Steel Valves Monel, Hastelloy and other Alloys available
Seat materials	Jorcote on SST — Standard
Diaphragm materials	Stainless Steel — standard Buna-N — optional Jorlon — optional Viton — optional
Service	steam, water, gas, oil, air and chemicals
Shutoff	ANSI Class IV