Stainless Steel Check Valves

Combining the best features of durability and positive sealing, these unique valves are constructed throughout of 316SS for high corrosion resistance.

PTFE soft seal for positive bubble-tight sealing (with gas) from cryogenic to +375F temperatures. Seals also available for radioactive environments or up to +500F steam (can be furnished without soft seat for higher temperature steam service).

Sizes 1/4″ through 1″ use a ball, and for reduced inertia the larger sizes (1-1/4″ through 2″) use a poppet. Cracking pressure is 1 to 4 psi.

Air Pilot Switches

An air pilot switch is a pressure switch. These units provide a pneumatic signal up to 150 psi at any sensing pressure within their adjustment range. The signal valve may be piped normally-open, normally-closed, 3-way or 2-way (depending on model).

All models use a 2-position poppet-type air signal valve which is shifted from its normal position by a rod from the sensing end which first must overcome and adjustable force spring (styles A & C) or air-regulated dome loader (style B).

Applications:

• Direct automatic start/stop of any Haskel pump, gas booster, air amplifier or indirectly to the drive of any pump or compressor sensing either output or suction
• Valve actuators
• Pneumatic alarm signals
• Replace an explosion-proof pressure switch in hazardous applications

Air-Operated Directional Control and Release Valves

These directional control valves are basically a family with common characteristics and benefits.

• They are seated poppet or ball design with virtually zero leakage at high pressures with low viscosity fluids. They are not “bubble-tight” in gas applications.
• They are directly air-acutated for ideal system compatibility in wet or hazardous areas, or when used with air-driven pumps or boosters. Yet, if electronic or electrical control is preferred, they can be actuated with any of the wide selection of sub-miniature 3-way solenoid air valves available from many manufacturers.
• They employ the same basic area ratio principle used in Haskel pumps enabling high forces to be easily and directly controlled from low-pressure plant main or instrument air.
• Although not normally considered for pressure control, all of the normally-open 2-way models can do double-duty in a circuit by also providing a safety relief function simply by installing a small air regulator in their pilot line.

Regulating Relief Valves

These valves were originally developed in response to the need for accurate regulation of high pressure at low flow without the “chatter” often encountered with valves of this size. They are differential area poppet design with a high ratio between seal and seat area for smooth control, repeatability and low deadband between crack and reseat pressure.

The configuration also makes the control settings virtually unaffected by downstream outlet pressure. This enables the valves to also be used for back pressure control (upstream pressure controller) or as a sequence (priority pressure) valve.

Hydraulic Accumulators & Gas Receivers

Hydraulic accumulators for use with Haskel high-pressure hydraulic pumps will store large amounts of energy. Each accumulator is proof tested to twice its maximum working pressure.

Gas receivers are designed for use with Haskel gas booster compressors and as backup gas storage for Haskel accumulators. Each receiver is proof tested hydrostatically to twice its working pressure and tested for gas leakage at maximum working pressure. Since high-pressure gas storage vessels are critical and particularly susceptible to inside flaws, each barrel is carefully honed inside to remove all inclusions and flaws after magnetic inspection.

Filters

These units are designed as the final protection with gas boosters handling purified gases or for liquid pumps handling pre-filtered clean liquids. The elements do not have sufficient area to be practical for more than occasional particle migration due to pump wear or improperly cleaned piping or containers.

Plenum Chambers

Used in air amplifier and gas booster assemblies to dampen pulsation between stages.

6000 psi Gas Storage Cylinders

• Manufactured and certified to DOT-E-9909-6000 specifications for 6000 psi gas at 70F
• Actual volume: 2640 ACI (1.53 ACF)
• Capacities @ 6000 psi:
  • Air: 509 SCF
  • Nitrogen: 494 SCF
  • Argon: 581 SCF
  • Helium: 525 SCF
• One-piece forged and heat-treated alloy steel construction
• Primed and orange-yellow painted exterior with stainless steel port adapter
• Nominal dimensions: 9.28″ OD x 52″ high