Technical Datasheet -- 2-Valve Instrument Manifold -- Block & Bleed SS316

2-Valve Instrument Manifold -- Block & Bleed SS316

Compact Direct-Mount Instrument Manifold for DP Transmitters and Gauges

Document No.SV-DS-MNF-001

RevisionRev A

DateMay 2026

ManufacturerSupreme Valves India, Ahmedabad, Gujarat, India

This datasheet covers compact 2-valve instrument manifolds machined from solid SS316 barstock with integral block and bleed needle valves for direct mounting to differential pressure transmitters, gauges, and level instruments.

Parameter	Specification
Size Range	1/2" NPT process x 1/2" NPT instrument (standard)
Pressure Rating	6,000 PSI (standard), 10,000 PSI (high-pressure option)
Body Material	Solid SS316 barstock, one-piece machined
Valve Type	Block and bleed needle valves
Needle Tip	SS316 non-rotating Vee-point tip
Seat Material	Integral SS316, matched-lapped
Temperature Range	-73°C to +538°C (graphite packing)
Connections	1/2" NPT male/female process; 1/2" NPT female instrument
Mounting	Direct mount 54 mm centre-to-centre for most DP transmitters
Handle	SS304 knurled handwheel standard; T-bar optional
Features	Integral block and bleed, non-rotating tip, blow-out proof stem, panel mountable

Parameter

Specification

Size Range

1/2" NPT process x 1/2" NPT instrument (standard)

Pressure Rating

6,000 PSI (standard), 10,000 PSI (high-pressure option)

Body Material

Solid SS316 barstock, one-piece machined

Valve Type

Block and bleed needle valves

Needle Tip

SS316 non-rotating Vee-point tip

Seat Material

Integral SS316, matched-lapped

Temperature Range

-73°C to +538°C (graphite packing)

Connections

1/2" NPT male/female process; 1/2" NPT female instrument

Mounting

Direct mount 54 mm centre-to-centre for most DP transmitters

Handle

SS304 knurled handwheel standard; T-bar optional

Features

Integral block and bleed, non-rotating tip, blow-out proof stem, panel mountable

Component	Material
Body	SS316 solid barstock, one-piece machined, 100% volumetric ultrasonic tested
Needle	SS316 hardened non-rotating Vee-point tip, matched-lapped to integral seat
Stem	SS316 anti-blow-out stem with ACME threads and thrust collar
Packing	PTFE V-rings (standard) or graphite braided (high temperature)
Gland Nut	SS316 hex gland nut with smooth threads to prevent galling
Bonnet	SS316 threaded or union bonnet for in-line packing replacement
Handle	SS304 knurled handwheel standard; T-bar for high-torque service

Component

Material

Body

SS316 solid barstock, one-piece machined, 100% volumetric ultrasonic tested

Needle

SS316 hardened non-rotating Vee-point tip, matched-lapped to integral seat

Stem

SS316 anti-blow-out stem with ACME threads and thrust collar

Packing

PTFE V-rings (standard) or graphite braided (high temperature)

Gland Nut

SS316 hex gland nut with smooth threads to prevent galling

Bonnet

SS316 threaded or union bonnet for in-line packing replacement

Handle

SS304 knurled handwheel standard; T-bar for high-torque service

Test	Requirement
Test Standard	Hydrostatic 1.5x rated pressure per API 598 / MSS SP-99
Certification	CE, ISO 9001, NACE MR0175 on request

Test

Requirement

Test Standard

Hydrostatic 1.5x rated pressure per API 598 / MSS SP-99

Certification

CE, ISO 9001, NACE MR0175 on request

Standard	Description
Design Standard	ASME B16.34 / MSS SP-99

Standard

Description

Design Standard

ASME B16.34 / MSS SP-99

Notes

Manifold centre-to-centre dimension must match transmitter bolt pattern; standard 54 mm suits most common DP heads.
Non-rotating tip is standard; specify rotating tip only if media contains abrasive particles requiring self-cleaning action.
For sour gas service (H2S > 0.01 MPa partial pressure), select NACE MR0175 compliant material with hardness < 22 HRC.
Panel-mount version includes square body and lock nut; specify panel thickness for correct nut thread length.
Manifold must be depressurised before operating bleed valve; open bleed slowly with downstream isolated.