Pattern-Either outlet port may be isolated from the inlet but at
no time can both outlet ports be
Protection-At midpoint of change-over stroke, both safety relief
valves are in service with full relief area.
Packing Gland-Uses standard valve packing systems which may
utilize spring loading or lantern ring options.
design provides drop tight, zero leakage for personnel protection
Materials- Carbon steel and stainless steel
are standard. Nickel, monel, alloy 20, titanium, Hastelloy™ also
Options- Sizes 1” through 10” available in ANSI pressure
classes 150 through 2500# with temperatures to 1000°F.
Fire-Safe designs available.
- Straight linear handwheel operation. Chain wheel actuation available
with operator remote from valves for safety. Mitre gear and right
angle drives available.
Indication – Valve position (right or left hand valve) clearly
indicated and visible from floor level.
– Inlet connection may be rotated 360°
for ease in positioning on vessel and proper alignment of SRV’s.
Also center-to-center distance for SRV’s may be varied to suit the
– Positive optional lock-out device available
Ports – Optional test ports(with valves) provided for bleeding
pressure prior to repair, can also be used for in-place setting and
testing of SRV’s.
– Change-over valves on inlet and outlet of SRV’s operated
together with optional single handwheel, to prevent fugitive
WE OUTSELL THEM BECAUSE WE OUTPERFORM THEM.