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WM-783

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WM-783

Product catalog summary

Williams Customer Specification Form

Document Number: 119875 Revision Level A

Date Effective: 09/1982

Applications

The WM783A is a versatile control valve used in various industrial and vehicular applications, such as controlling air-operated relay valves, cylinders, and power take-off systems.

Operation

The WM783 valve operates with a control lever that has three positions: Position 1 supplies pressure to outlet port 2 while exhausting outlet 1; Position 2 is a neutral or 'hold' position where both outlets are exhausted; Position 3 supplies pressure to outlet port 1 while exhausting outlet 2.

Description

The WM738 series consists of non-compensating four-way control valves with three functional positions. The WM783A1 model includes a detent in each lever position, while the WM783A model features a spring-loaded lockout safety device to prevent unintentional movement.

Specifications

Port Size: 1/8-27 NPTF
Maximum Operating Pressure: 150 PSI (1034.2 kPa)
Operating Temperature: -28.9°C to 93.3°C
Flow Rating: 15 SCFM @ 100 PSI (0.4m³/min @ 690 kPa)
Mounting: Panel Mounted, Attitude Optional
Materials: Die Cast Zinc Alloy for Body Casting and Actuating Cam, Buna N for Poppet and O-rings, Steel for Actuating Lever Shaft, Black Plastic for Knob, Yellow Plastic for Safety Lockout
Net Weight: WM782A - 1lb, 1oz (0.5kg); WM782A1 - 1lb, 4oz (0.6kg)

Ordering Information

Specify Model Number, Suffix, and Part Number. The WM783A model includes a safety lockout feature, while the WM783A1 model has two detents and is compatible with specific WABCO part numbers.

Contact Information

USA: Portland, Oregon - T: +1.503.684.8600, Email: [email protected]

Europe: Garching, Germany - T: +44.89.5404.100.0, Email: [email protected]

Asia: Shanghai, China - T: +86.213.3310670, Email: [email protected]

Parts Identification

The document lists various parts for the WM782A and WM782A1 models, including screws, springs, inlet body, poppet, body assembly, valve cover, upper body, valve stem, handle bushing, lever pin, cam assembly, latch assembly, knob, and adapters.

Catalog excerpts

Williams Controls WM-783 Williams Customer Specification Original Release: 09/82 Original Project: 119875 APPLICATIONS The WM783A is a versatile control valve with a variety of industrial and vehicular applications. WM783A valves are frequently used to control air operated relay valves, cylinders and power take off systems. OPERATION When the WM783 valve's control lever is in position 1 (refer to external configuration) outlet port 2 receives supply pressure and outlet 1 is exhausted. Both outlet ports are exhausted in position 2, which is the neutral or 'hold' position and in position 3, outlet port 1 receives supply pressure and outlet 2 is exhausted DESCRIPTION The WM738 series is composed of non-compensating four-way control valves with three functional positions. WM738 valves are available with two types of lever operation: WM783A1 models have a detent in each of the valve’s lever positions and WM783A models are equipped with a spring-loaded lockout safety device, which locks the control lever in each of the three positions to prevent unintentional movement.

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WM-782 | Williams Customer Specification WM-782 | Williams Customer Specification

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WM-782 | Williams Customer Specification USA Portland Europe Garching Asia Shanghai Oregon Germany China [email protected] [email protected] [email protected]

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*Prices are pre-tax. They exclude delivery charges and customs duties and do not include additional charges for installation or activation options. Prices are indicative only and may vary by country, with changes to the cost of raw materials and exchange rates.

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