316 Stainless Steel Pressure Relief Valve with a 316 Stainless Steel / reinforced PTFE seat. Ideal for sanitary systems, steam and other industrial applications. The relieving pressure is set by turning down the setting nut under the top cap. Not for Safety Relief application. For Liquid applications we recommend our Closed Cap Relief Valves.

Model Inlet Size Outlet Size Temperature Range
FGXL04 1/2" BSPT 1" BSP -20°C to 180°C
FGXL05 3/4" BSPT 1" BSP -20°C to 180°C
FGXL06 1" BSPT 1" BSP -20°C to 180°C

Capacity charts for the above models can be found here for the following Applications:   Steam        Air        Water

Stainless Steel Closed Cap Pressure Relief Valve

Model Inlet Size (P1) Outlet Size (P2) Lift L1 L2 H
FGXL04 1/2" BSPT 1" BSP 0.5 41.5 65 198
FGXL05 3/4" BSPT 1" BSP 0.75 41.5 66 199
FGXL06 1" BSPT 1" BSP 0.9 41.5 71 202
FGXL07 1-1/4" BSPT 2" BSP 0.75 68 94.5 299
FGXL08 1-1/2" BSPT 2" BSP 0.98 68 97 302
FGXL09 2" BSPT 2" BSP 1.26 68 102 306

All dimensions in mm unless shown otherwise. 

Stainless Steel Closed Cap Pressure Relief Valve

Number Name Material
1 Body 316 Stainless Steel
2 Seat 316 Stainless Steel
3 Spindle 316 Stainless Steel
4 Spring Seat 316 Stainless Steel/RPTFE
5 Disc 316 Stainless Steel
6 Cap 316 Stainless Steel
7 Spring 316 Stainless Steel
8 Nut 316 Stainless Steel
9 Adjusting Screw 316 Stainless Steel

Size 1/2" to 2" BSP
Body 316 Stainless Steel
Seat 316 Stainless Steel & PTFE
Pressure Range  2 to 20 Bar
Temperature -20°C to 180°C
Feature Open Cap & Easing Gear

Product History