Fully adjustable needle valve with reverse flow check

Capacity:

Functional Group:

Products : Cartridges : Corrosion Resistant : Flow Control : 2 Port, Fully Adjustable

Needle with Reverse Flow Check

Model:

NCIA

Product Description

Needle valves with reverse-flow check are fully adjustable orifices used to regulate flow.

They are infinitely adjustable from fully closed up to the maximum orifice diameter. An

integral high-capacity check valve provides unrestricted flow from port 2 to port 1. They

are not pressure-compensated.

Technical Features

All 2-port flow control cartridges are physically and

functionally interchangeable (i.e. same flow path,

same cavity for a given frame size). However,

cartridge extension dimensions from the mounting

surface may vary.

Because needle valves are non-compensating

devices, the fixed orifice size will regulate flow

through the valve in proportion to the square root

of the pressure differential across ports 1 and 2.

Incorporates the Sun floating style construction to

minimize the possibility of internal parts binding

due to excessive installation torque and/or

cavity/cartridge machining variations.

Technical Data

U.S. Units Metric Units

Cavity T-18A

Maximum Operating Pressure 5000 psi 350 bar

Maximum Valve Leakage at 110 SUS (24 cSt) 1 drops/min. 0,07 cc/min.

Series (from Cavity) Series 4

Valve Hex Size 1 5/8 in. 41,3 mm

Valve Installation Torque 350 - 375 lbf ft 465 - 500 Nm

Model Weight 2.10 lb 0,95 kg

Seal Kits Buna: 990-018-007

Seal Kits Viton: 990-018-006

NCIA-LAP

Control Cracking Pressure

External Material/Seal

Material

Standard Options

L Standard Screw Adjustment

A 4 psi (0,3 bar)

B 15 psi (1 bar)

C 30 psi (2 bar)

Z 1 psi (0,07 bar)

P Stainless/Buna-N

W Stainless/Viton

Explanation of Sun cartridge control options - US units.

Explanation of Sun cartridge control options - metric units.