High Pressure Components
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HYDRAULICS INTERNATIONAL, INC. 9201 Independence Ave., Chatsworth, CA 91311 USA • (818) 407-3400 • Fax: (818) 407-3428 • Email: sales@hiipumps.com HIGH PRESSURE COMPONENTS PRESSURE RELIEF VALVES High Pressure, Low Flow These valves are direct operated, differential poppet, dry spring chamber design. All ports can accept full working pressure permitting their use also as a sequence valve or back pressure controller regulator (BPR). Wetted alloys are stainless steel. Dynamic seals are UHMWPE. Static seals are Buna. Optional: Viton add-V. EPR add-E. Wrench flats are standard on adjusting screws.* Model No. Adjustable Range Seat (PSI) *RVL-60 Liquid Liquid or Gas Stainless Not bubble tight 100 thru 6,000 1/4 NPT *RVG-60 Gas Gas Nylon bubble tight Liquid Liquid or Gas Stainless Not bubble tight *RVL-100 1,000 thru 10,000 1/4 NPT Bubble tight *RVG-100 Gas Gas Nylon .070 *RVLS-60 Liquid Liquid or Gas Stainless Not bubble tight 1/4 Super 200 thru 6,000 *RVGS-60 Gas Gas Nylon Pressure Bubble tight *RVLS-100 Liquid Liquid or Gas Stainless Not bubble tight 1/4 Super 1,000 thru 10,000 *RVGS-100 Gas Gas Nylon Pressure Bubble tight *RV-300 Liquid or Gas *RV-600 *RV-30K Liquid or Gas Double Seal *Plastic knob optional at extra cost on RVL or RVG models only. Specify with suffix “H” (e.g. RVL-100H). PILOT CUTOFF VALVES Sense Liquid or Gas Pressures. Provide Air Signal. These valves perform a function similar to a pressure switch. The sensing piston or plunger movement is spring or air adjusted. When the sensed pressure is reached, a small, integral air valve shifts position cutting off, or providing, a pilot air signal. Useful for start/stop control of various pneumatically piloted devices such as HII pumps, valves and boosters. Maximum air valve pressure is 120 PSI. Sensing section alloys are stainless steel. Buna static seal standard, optional: Viton add-V, EPR add -E. (e.g. PCV-E002E). Model No. Sensing Nominal-Range(PSI) PCV-002 PCV-020 INTERNAL SPRING PCV-100 LOADED BOLT PCV-E002 EXTERNAL PCV-E020 SPANNER NUT PCV-E100 (UNDERNEATH THE NAME PLATE) PCV-E250 PCV-R025 REMOTE AIR PRESSURE PCV-R100 REGULATOR 20-100 PSI PCV-R250 600 2 WAY, Three ports 11,000 NOconvertible to NC or NO with plug 11,000 provided 600 11,000 11,000 3 WAY 26,000 Three ports useable 11,000 for either NC or NO applications 11,000 26,000 INLINE CHECK VALVES, 316 STAINLESS STEEL BODIES High Pressure. These valves are 316 S.S. ball type and soft seat (PTFE ring) in the 1/4 NPT, 1/2 NPT, 3/4 NPT, and 1 NPT sizes; Brass poppet on S.S. seat in the 2 NPT size. Control springs hold approximately 3 PSI. Optional higher pressure springs are available in the 2” NPT unit only. Model No. Maximum Pressure-PSI Flow Orifice Min. Dia. (Inches) Static Seal Notes: (1) Optional static seal: For Viton, add “V”, for EPR, add “E

UNLOADING VALVES Normally Open, Normally Closed, Air Pilot Actuated. Basic Nominal Configuration Area Ratios Normally Close Air Pilot to Open Single Stage Port/Max. Pressure PSI Inlet Outlet Normally Open Air Pilot to Close, Single Stage Normally Closed Air Pilot to Open, Two Stage Reverse Flow These valves open or close high pressure oil or plain water back to tank or to another line or high pressure gas to another line. High pressure section alloys are stainless steel with stainless steel ball or poppet design. Free Flow Free Flow NOTES: (1) Based on 100 PSI air pilot. Maximum inlet...