Todays deals on Pilot Valve?

Vickers Sperry DG4V 3 8C W 8 10 S288 Hydraulic Pilot Directional Control Valve $1,000.00

Vickers DG4V-3-2A-M-W-B-40 Hydraulic Servo Directional Control Pilot Valve $1,000.00

**NEW** Vickers Pilot Valve 297245DG4S4016C50, 281291, 316011 $739.00

Daikin MEP12A3CPXP-50-520 MEP12A3CPXP50520 Pilot Operated Valve $599.00

New Leslie Controls Steam-Piloted Self Contained Pressure Reducing Valve 1 1/4″ $639.99

Skinner 1″ 2 Way Remote Pilot Operated Valve LR1XX6180 $550.00

Vickers Directional Control Valve DG5S 8 8C T R MBW 20 w/Pilot (6251) $525.00

Numatics Pilot Operated Valve 6JPA4U NEW W/ Gasket (6839) $499.00

NEW VICKERS PA3DG4S4LW-010A-B-60 PILOT VALVE MODEL 880025 $500.00

NEW PARKER SCHRADER BELLOWS SPEED KING VALVE L645-66-102 VALVAIR PILOT K065-6035 $499.99

REXROTH R900328798 PILOT OPERATED CHECK VALVE SANDWHICH PLATE NEW $474.99

Skinner 3/4 2 Way Remote Pilot Operated Valve LR1XX5180 $450.00

BURKERT 98604-20 TWO – WAY , PILOT OPERATED VALVE WITH MANUAL OVERRIDE $429.97

Danfoss CVT Pilot Valve $399.00

Ross Series 21 2172B8903 1-1/2″ NPT Single Solenoid Inline Pilot Air Valve $425.00

REXROTH VALVE RELIEVE PILOT OPERATED DB15G2-44/350V-12W65 *NEW* $375.00

HH200010001 PILOT OPERATED 4 WAY AIR CONTROL VALVE $350.00

NEW ADMIRAL VALVE CO. SPENCE A43 PILOT VALVE $360.00

NEW ADMIRAL VALVE CO. SPENCE A85 PILOT VALVE $339.95

Cashco Regulator Valve B57-69-6-90S04-10 PILOT 10-200 92-0808 $338.00

NEW ROSS 2776B4001 4/2 SINGLE SOLENOID PILOT PNEUMATIC VALVE $349.99

PARKER D31VW1D47570YF PILOT VALVE/VALVE ***XLNT*** $299.00

ROSS 8077B4341 SOLENOID PILOT VALVE $325.00

Sperry Vickers 4CT-06-A-20 CHECK VALVE PILOT OPERATED $314.99

3/4″ BURKERT SEAT ANGEL PISTON PILOT VALVE 2000 B 3/4 BZ 450259 0311 C 5/64 FPM $299.00

Ross Hydraulic Pilot Valve 8076B4341 $300.00

ASCO EV8316G382V 3way Air Piloted Spring Return Valve $299.99

D31VW1B45Y 20 PARKER PILOT VALVE NEW $280.00

Spence Pressure Reducing Valve 700117-85 / 1534-0 / 2820-1 , Pilot Type A73 $279.95

ITT Hoffman Pilot Valve SSP-225 1-1/4″ $279.95

Ross 2774B6001 Single Solenoid Pilot Valve 27 Series $275.00

Parker #16F24C2164AAF 125psi Brass NBR 2W Pilot Diaphram Solenoid Valve wo coils $264.99

VICKERS PILOT VALVE MODEL 02-337180 PA4DG4S4LW-012C-H-60-S558 $250.00

MAC MODEL 6321C-511-PM DOUBLE AIR PILOT VALVE $250.00

NEW PARKER CPOM3BBN CHECK VALVE PILOT OPERATED MANAPAK $250.00

PARKER CPOM3 PILOT CHECK VALVE ***XLNT*** $220.00

NEW SMC SOLENOID VALVE VP4350 103D 5 WAY 1 1/4″ PILOT $224.99

SPENCE 700122-90 REGULATOR PILOT VALVE 70012290 $220.00

ROSS 2778C4901 CHECK VALVE PILOT-OPERATED 1/2″ 120V NEW $199.99

NEW VICKERS PILOT VALVE DG4S4-012N-U-B-60 DG4S4012NUB60 $199.95

3/4″ BURKERT SEAT ANGEL PISTON PILOT VALVE 2000 B 3/4 E BR 00450259 0311 C 5/64 $199.00

Parker Fluid Control 4 Way Pilot Operated Solenoid Valve 73419AN2NN00N0C111P3 $195.00

ROSS DOUBLE SOLENOID PILOT VALVE 2776B3003 *NEW* 400C79 $200.00

NEW ROSS 2776B2001 4/2 SINGLE SOLENOID PILOT PNEUMATIC VALVE $199.99

ROSS HYD PILOT CONTROL VALVE SERIES 84 #8476C3322 24V NIB $189.99

ROSS 8077C3342 SOLENOID PILOT VALVE 24VDC NEW $195.00

PARKER A441343AHN4900A VALVE 24V 9WATTS NEW W/ PILOT K175903549 $185.00

NEW ASCO 835215 VALVE 120VAC/60HZ ANGLE BODY AIR PILOT $175.00

VICKERS DG5S-8-2C-M-WB-20 CONTROL VALVE W/O PILOT ***XLNT*** $149.00

NEW ROBERTSHAW 700-059 HIGH CAPACITY VALVE FOR D PILOT IGNITION SYSTEM (S23J) $169.99

VICKERS DG4S4LW-016C-B-60 PILOT SOLENOID VALVE (S43D) $169.99

NORGREN QM/5400/M/131/17 PILOT SOLENOID VALVE ****NIB**** $159.00

ROSS 8476C3342 PILOT VALVE NEW NO BOX $165.00

PARKER SKINNER SOLENOID VALVE PILOT OPERATED 1/4 4WAY 73417VKDKN00N0H111C2 P148 $148.99

PARKER SKINNER SOLENOID VALVE PILOT OPERATED 1/2 3WAY 73312BN4UNJ0N0H111C2 P150 $148.99

NORTHMAN FLUID POWER PILOT OPERATED RELIEF VALVE P/N RF-T10-3-30-N $149.99

ROSS W6077B4437 5/3 DOUBLE SOLENOID PILOT VALVE $149.99

NEW SPORLAN E14S270 SOLENOID VALVE, 1″ OPERATOR PILOT $149.99

DANIEL MEASUREMENT PART # 460650-100 PILOT VALVE NSN: 4820-01-143-1306 $155.00

CKD PKW-14-27-C VALVE 2 PORT PILOT KICK TYPE FOR WATER $150.00

Vickers DG4S4LW-010C-B-60 Pilot Valve $149.99

HONEYWELL SKINNER 2-WAY EXTERNAL PILOT SOLENOID VALVE 74232BN52NJ1N0L111P3 / NEW $130.00

3PC SET VICKER MAC AIR VALVES DG4V 3 68C M W B 40 57B 12 612AA PILOT VALVE $99.00

MAC Valve 58C-12-111CA Pilot Operated to 150 Psi 24 VDC (7067) $125.00

Vickers DG4S4LW-016C-B-60 Pilot Valve “Excellent Condition” $125.00

NEW ROSS 2768C3900 PILOT OPERATED PNEUMATIC CHECK VALVE M9 08 07 $129.00

Parker Fluid Control 2 Way Pilot Solenoid Valve # 73212BN4TN00N0D100P3 1/2 $125.00

SMC LVA200-02-C TEFLON, VALVE Pilot Press 0.4-0.5MPa $135.99

NIB DYNEX DUAL PILOT CHECK VALVE S8642-D03-AB-Y-21 $119.00

Snap Tite CAC25-25A Pilot CHECK VALVE CARTRIDGE NEW $125.00

ASCO Red Heat Valves 302272 2-way Pilot Solenoid Valves MAKE ME OFFERS -PLEA B#8 $120.44

Parker Schrader Bellows Pilot Valve K065903353 new $129.99

SCHRADER BELLOWS K065403353 PILOT VALVE ***NIB*** $114.00

ROSS Valve 2773A3939 1-10 bar 26VA 110/50 Solenoid Check Pilot Air Valve NEW * $117.00

New Lexair Airmatic Direct Pilot Operated 1″ Normally Open Bronze Valve 321416 $127.49

SMC 30-VXZ2230-02N-5D PILOT OPERATED 2 PORT SOLENOID VALVE NEW!! $89.99

Asco 2-way Pilot Operated Piston Valve Repair Kit 208544 NEW * $104.00

ASCO RedHat Pilot Operated General Service 8210G2 1/2npt 2-Way NC Solenoid Valve $115.00

NORGREN V61R513AA218JC PILOT VALVE ***NNB*** $104.00

Honeywell VR8440 Furnace Boiler Gas Pilot Valve 24v 50/60hz 0.2A 0.3A $112.99

SKINNER L SERIES SOLENOID VALVE – pilot operated 24VDC $110.00

NEW BURKERT 2000 A 1/2″ PTFE BZ ANGLE-SEAT PILOT VALVE NIB $109.99

NIB DYNEX DUAL PILOT CHECK VALVE S8642-D03-AB-V-21 3000 $89.00

Numatics 554JA400O 554JA4000 Pilot Valve NEW $108.00

1616C2322 Ross 1/4″ Single Solenoid Pilot Valve $95.00

Vickers Check Valve Pilot Operated DGMPC-3ABK-21 (7323) $99.00

Mac Valves Piloted 3/4″ Valve 6512B-531-RA $90.00

NUMATICS AUTO PILOT S21P-02 CHECK VALVE $100.00

NEW Vickers DGMPC-3-ABK-BAK-41 Dual Pilot Operated Check Valve $97.99

ROSS 2768C4900 CHECK VALVE PILOT OPERATED 1/2INCH $95.00

VICKERS PILOT VALVE MODEL 02-119461 DG4S4-016C-U-H-60 $75.00

SMC NVS3135-4520 PILOT OPERATED VALVE 24VDC $79.99

New Rexroth Bosch Group PNEUMATICS PILOT VALVE 1827414303 1 827 414 303 $89.00

Lot 2 Camozzi 434-35 Pneumatic Air Pilot Spring Return Valve 3/2 Way W/ Fittings $74.99

SMC PILOT CHECK VALVE PN: XTO-1239-02 $78.00

Norgren Solenoid Pilot Actuated Valve UM22354/6123 $85.00

SMC VFA5220-02F AIR PILOT PNEUMATIC VALVE $84.99

New Lexair Inc Bronze 3/8″ Direct Pilot Operated Globe Valve 331406 $84.99

New Lexair Inc Bronze Direct Pilot Operated Globe Valve 321406 $84.99

GOYEN RCA3 8v6000, 8V Gas Valve Pilot Distribution NEW $69.95

Pilot Valve Questions

Understanding Solenoid Valves

Solenoid valves are highly engineered products that can be used in many diverse and unique system applications. A brief overview of the pneumatic component and functional varieties of solenoid valve follows.

Valve Construction And Basic Operation

A solenoid valve is an electronically operated device. It is used to control the flow of liquids or gases in a positive, fully-closed or fully-open mode. The valve is commonly used to replace a manual valve or where remote control is desirable. A solenoid is operated by opening and closing an orifice in a valve body that permits or prevents flow through the valve. The orifice is opened or closed through the use of a plunger that is raised or lowered within a sleeve tube by energizing the coil. The bottom of the plunger contains a compatible sealing material, which closes off the orifice in the body, stopping flow through the valve.

The solenoid assembly consists of a coil, plunger, and sleeve assembly. In a normally closed valve, a plunger return spring holds the plunger against the orifice, preventing flow through the valve. When the coil is energized, a magnetic field is produced, raising the plunger and allowing flow through the valve. In a normally open valve, when the coil is energized, the plunger seals off the orifice, stopping flow through the valve.

Direct Operated Solenoid Valves

Direct operated solenoid valves function to directly open or close the main valve orifice, which is the only flow path in the valve. Direct operated valves are used in systems requiring low flow capacities or in applications with low pressure differential across the valve orifice. The sealing surface that opens and closes the main valve orifice is connected to the solenoid plunger. The valve operates from zero pressure differential to maximum rated pressure differential (MOPD) regardless of line pressure. Pressure drop across the valve is not required to hold the valve open.

Pilot Operated Valves

Pilot operated valves are the most widely used solenoid valves. Pilot operated valves utilize system line pressure to open and close the main orifice in the valve body. In a piston-style valve, the main orifice is held closed with a piston seal pressed against the main orifice by the combined fluid pressure and spring pressure. In a normally closed valve, the piston is shifted or opened when the pilot operator is energized. This allows fluid behind the piston to evacuate through the valve outlet. At this point, the system line pressure moves the piston, opening the main orifice of the valve allowing high capacity flow through the valve. When energizing the coil of a normally open valve, fluid pressure builds up behind the piston, forcing the piston to seal the main orifice of the valve.

Design Terminology

Continuous Duty — A rating given to a valve that can be energized continuously without overheating.

Correction Factor — A mathematical relationship related to a fluid’s specific gravity used to convert specific flows from a standard media to the media in question.

Current drain — The amount of current (expressed in amperes) that flows through the coil of a solenoid valve when it is energized.

Cv Factor — A mathematical factor that represents the quantity of water, in gallons per minute, that will pass through a valve with a 1 psi pressure drop across the valve.

Flow — Movement of fluid created by a pressure differential.

Flow Capacity — The quantity of fluid that will pass through a valve under a given set of temperature and pressure conditions.

Manual Stem — A mechanical device that permits the manual opening or closing of a valve in the case of emergency or power failure. A manual stem is available on all normally closed valves.

Maximum Operating Pressure Differential (MOPD) — The maximum pressure difference between the inlet and outlet pressures of the valve must not be exceeded, allowing the solenoid to operate in both the energized and de-energized positions.

Minimum Operating Pressure Differential — The minimum pressure difference between the inlet and outlet pressures required for proper operation. This minimum operating pressure differential must be maintained throughout the operating cycle of pilot operated valves to assure proper shifting from the closed position to the open position and visa versa. In the absence of the minimum operating pressure, the valve may close or will not fully open.

Orifice — The main opening through which fluid flows.

Safe Working Pressure — The maximum pressure a solenoid valve may be exposed to without experiencing any damage. The solenoid valve does not have to be operable at this pressure, but merely withstand the pressure without damage.

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Ningbo Lida Pneumatic Complete Sets Co.,Ltd. specializing pneumatic components,solenoid valve,air cylinder & pneumatic fittings that these are inexpensive.It has with more than 15years.

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