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MODEL

RVIB

Normally closed modulating element valve with relief function

SERIES 4 / CAPACITY: 320 L/min. / CAVITY: T-19A

NOTE: DATA MAY VARY BY CONFIGURATION. SEE CONFIGURATION SECTION.

Three-port normally closed modulating elements with relief provide two functions when

combined with an external orifice. The mainstage is a bypass compensator that controls a

priority flow into the circuit, determined by the external orifice. Input flow in excess of the

priority flow is bypassed to tank (port 2). If the inlet (port 1) pressure rises to the valve setting,

the valve operates as a normal relief valve.

TECHNICAL DATA

Cavity T-19A

Series 4

Capacity 320 L/min.

Factory Pressure Settings Established at 15 L/min.

Maximum Operating Pressure 350 bar

Response Time - Typical 10 ms

Maximum Valve Leakage at 110 SUS (24 cSt) 80 cc/min.@70 bar

Adjustment - No. of CW Turns from Min. to Max. setting 5

Valve Hex Size 41,3 mm

Valve Installation Torque 474 - 508 Nm

Adjustment Screw Internal Hex Size 4 mm

Locknut Hex Size 15 mm

Locknut Torque 9 - 10 Nm

Seal kit - Cartridge Buna: 990019007

Seal kit - Cartridge EPDM: 990019014

Seal kit - Cartridge Polyurethane: 990019002

Seal kit - Cartridge Viton: 990019006

Model Weight 1.44 kg.

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RVIB

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(L)CONTROL

L Standard Screw Adjustment

C Tamper Resistant - Factory Set

K Handknob

(A)ADJUSTMENT RANGE

A 100 - 3000 psi (7 - 210 bar),

1000 psi (70 bar) Standard

Setting

B 50 - 1500 psi (3,5 - 105 bar),

1000 psi (70 bar) Standard

Setting

C 150 - 6000 psi (10,5 - 420 bar),

1000 psi (70 bar) Standard

Setting

(N)SEAL MATERIAL

N Buna-N

E EPDM

V Viton

TECHNICAL FEATURES

Compensating pressure for all ranges is 90 psi (6 bar).

Explanation of the performance curve: The X axis is system pressure. The Y axis shows the pressure differential that the valve creates

across the control orifice. The curves represent various bypass flows (pump flow minus control flow). The capacity and performance of

this valve is determined by the bypass flow, control flow is not a factor.

Cartridges configured with EPDM seals are for use in systems with phosphate ester fluids. Exposure to petroleum based fluids,

greases and lubricants will damage the seals.

PERFORMANCE CURVES

Model Code Example: RVIBLANCONFIGURATION OPTIONS