Valves & Fittings

Covering Berslok high-pressure double-ferrule tube valves, proprietary metal bellows seal valves, 316L BA/EP ultra-clean stainless steel tubing, and high-precision gas filters.

< 2×10⁻⁶atm·cc/s Helium mass spectrometer internal & external leak rate standard for metal bellows valves
10,000psig Max working pressure 689 bar for Berslok high-pressure needle/ball valves
Ra ≤ 0.25μm Inner wall roughness of 316L EP electropolished tubing
0.003 ~ 100μm Full-gradient filtration ratings for gas filters

Product Overview

Covering instrument manifolds, valves, tube fittings & connectors, high-pressure & accessories, as well as clean stainless steel gas tubing and gas filters. Our valve series includes Berslok precision instrumentation valves and Zhongke Purui's proprietary BFJ metal bellows-sealed high-purity stop valves, meeting the demands of high-purity gas delivery, instrumentation measurement, and high-pressure fluid control.

Berslok High-Pressure Pneumatic Needle Valve
Berslok / BFJ Series

Berslok Valves

Includes high-pressure needle valves, ball valves, proportional relief valves, check valves, and proprietary BFJ metal bellows-sealed high-purity stop valves.

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Berslok 3-Valve Manifold
Berslok · 2 / 3 / 5-Valve Manifolds

Instrument Manifolds

2-valve, 3-valve, DBB manifolds, and instrument manifolds for instrumentation measurement, isolation, and venting applications.

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Berslok Ferrule Tube Fitting
Berslok · 1/16″ ~ 2″

Tube Fittings & Connectors

Double-ferrule tube fittings, 37° flared fittings, high-pressure connectors, weld tees, and double-shutoff fittings for precision instruments and high-purity gas lines.

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Berslok 6000 psi High-Pressure Series
Berslok · 6000 psi

High-Pressure & Accessories

6000 psi high-pressure series and sample cylinders, providing matched components for high-pressure gas lines and media sampling.

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316L Bright Annealed (BA) and Electropolished (EP) Precision Seamless Stainless Steel Gas Tubing
316L BA / EP Dual Grades

Stainless Steel Gas Tubing & Fittings

Mirror electropolished inner wall Ra ≤ 0.25 μm, cleanroom cleaned and delivered with high-purity nitrogen purge; turnkey centralized gas supply engineering from cylinder manifold rooms to point-of-use valve panels.

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High-Precision Mirror-Polished Stainless Steel Multi-Element Gas Filter (Supports Sintered Metal and Pleated PTFE Elements)
0.003 ~ 100 μm

Stainless Steel Gas Filters

Dual 316L sintered metal and pleated PTFE element systems, retention efficiency ≥ 99.9999%, backflush regenerable to protect MFCs and downstream precision instruments.

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Full-Series Quick Selection Guide

Product Series Representative Models / Scope Size & Port Range Max Working Pressure Connection Type Key Specifications Typical Applications
Instrument Manifolds 2 / 3 / 5-Valve Manifolds · DBB Manifolds 1/8″ ~ 1″ 6,000 psig (413 bar) Double Ferrule / NPT / Weld Multiple manifold & distribution configurations Instrument measurement, high-pressure analytical gas lines
Berslok Valves Needle / Ball / Check Valves / BFJ Bellows Valves Berslok 1/4″ ~ 2″; BFJ DN4 ~ DN125 Berslok Needle / Ball Valves 10,000 psig; BFJ 0.0001 ~ 1.6 MPa Double Ferrule / NPT / Threaded / Weld BFJ leak rate < 2×10⁻⁶ atm·cc/s (He) High-pressure fluid control, semiconductor specialty gases, purifier equipment panels
Tube Fittings & Connectors Double-Ferrule / 37° Flared Fittings · Weld Fittings 1/16″ ~ 2″ (Metric 2~50 mm) Double-ferrule / 37° flared series up to 10,000 psig Double Ferrule / 37° Flared / NPT / Weld Mechanical bite-type seal · Reusable assembly Precision instruments, high-purity gas line connections
High-Pressure & Accessories 6000 psi High-Pressure Series · Sample Cylinders Selected per model High-pressure series 6000 psi; sample cylinders per model Selected per model Matched to media, pressure, temperature & port High-pressure gas lines, media sampling
Stainless Steel Gas Tubing & Fittings EP / BA Seamless Tubing + Orbital Weld Fittings 1/16″ ~ 2″ (Φ3 ~ Φ50 mm) Per tubing wall thickness schedule Orbital Weld / VCR Face Seal / Clamp / Ferrule Inner wall Ra ≤ 0.25 μm (EP) · Clean N₂-purged delivery Centralized gas supply, MOCVD, GC-MS, glove boxes
Stainless Steel Gas Filters In-Line / Vertical / Multi-Element Cluster Filtration rating 0.003 ~ 100 μm Atmospheric ~ 16 MPa (customizable) Double Ferrule / VCR Weld / Flange / Clamp Retention efficiency ≥ 99.9999% · Backflush regenerable Purifier outlets, post-PSA towers, upstream MFC protection