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All Categories > Drilling Rig Air Valves for MMO (Marine, Mobile & Oil Field) > Emerson Aventics (WABCO) Drilling Rig Air Valves > Aventics Relay Valves > Rexroth Type 'S' Relay Valves > Rexroth Type 'S' Relay Valves > Item # R431009099  
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Item # R431009099, Rexroth Type 'S' Relay Valves


Reliability
Automatically sustains pressure directed by the pilot line on a 1 to 1 ratio (optional ratios shown below). The balanced internal valve functions to relieve excess pressure, or to maintain pressure against demand. Rubber seated valves provide zero leakage.

Installation Versatility
Operates in any position. May be supported by piping alone or by a mounting bracket. The IN and OUT ports are plainly marked on the body.

Ease of Maintenance
The valve may be serviced without disturbing line connections. All parts are accessible by removing top cover. No special tools are required.

Large Capacity
Designed with minimum valving to provide maximum flow (see graph).

Modern Construction
All materials are corrosion resistant. The sturdy die cast body contains wrench flats for ease of installation. Ports have dry seal pipe threads (suitable with standard pipe thread).

Positive Seals
Packing rings are located at all critical points in the assembly to eliminate internal and external leakage.

Application

The "S" Relay Valve is a pilot-operated, 3-way, pneumatic pressure control valve with open exhaust. The large capacity of this valve makes it an ideal volume booster. It receives pressure signals from a remote control valve and repeats this pressure with a greater rate of flow to the component being controlled. The valve serves to speed response time between sending and receiving stations in a pneumatic circuit which involves long piping runs or branch circuits. Where the controlled component is not in a readily accessible location, remote piloting provides a solution.

Contact Rexroth for outline drawings.




Specifications  · Materials  · Dimensions

Specifications

Old Part #
P -064955-00002
P-064955-2
P064955-2
P-64955-2
P64955-2

Pipe Size
1/2"-14 Hydraulic piloted 300 psi max-Air inlet 150 psi max

Model Designation
4-S

Weight
2 lb
10 oz

Type
3 way pilot operated pressure control

Maximum Supply Pressure
250 psi

Maximum Pilot Pressure
250 psi

Ratio-Pilot To Delivery
1:1 standard; others noted below.

Temperature Range
-20 to 160 ºF

Media
Air or inert gas

Pilot Port Size
1/4" NPT

Body Port Size
1/4" and 1" as noted below

Hysteresis
Less than 5 psi.


Materials

Body Material
3/4" and 1" die cast aluminum
3/8" & 1/2" die cast zinc

Diaphragm Material
Nylon reinforced HYCAR

Other Material
Anodized aluminum or plated


Dimensions

A
3 9/16 in.

B
3 1/4 in.

C
3 1/4 in.

D
4 1/2 in.

E
4 1/16 in.

F
2 1/4 in.

G
1 11/32 in.

H
1 5/8 in.

I
2 7/8 in.

J
11/16 in.

K
15/32 in.


 MORE IMAGES 

·  Rexroth Type S Valve Flow Capacities

·  Rexroth Type S Valve Operating Characteristics

·  Type S Relay Valves Details


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