DN15-150 Stainless steel pressure sustaining valve 1-10 Bar

Description

Direct Acting Flanged Pressure Sustaining Valve – Z Tide Industrial Series RFF

Heavy-duty direct-acting back pressure valve designed for industrial systems requiring precise upstream pressure maintenance.

Key Features

Function: Pressure sustaining / back pressure valve (BPV)
Operation: Direct acting
Port Sizes: DN15, DN20, DN25, DN40, DN50, DN65, DN80, DN100, DN150
Flange Type: PN16 standard; optional JIS10K, ANSI150Lb, or PN25
Max Inlet Pressure: 25 Bar
Back Pressure Adjustment: 1–5 Bar or 4–10 Bar, indicated via stainless steel pressure gauge (included)
Test Pressure: 35 Bar
Temperature Range: -15°C to +80°C

Materials & Construction

Body: 316 stainless steel standard; Duplex 316 stainless steel optional
Flanges: CF8M for DN65–DN100; other sizes welded 316L stainless steel
Internals: Stainless steel
Seals: NBR standard; optional Viton or EPDM
Media Compatibility: Air, water, pure water, light oil, and other fluids/gases <40 cSt compatible with materials of construction

Performance & Design

Maintains pre-set back pressure upstream:
If upstream pressure drops to set value → valve begins to close to sustain pressure
If pressure rises → valve opens to allow flow again
Designed for critical upstream systems, limiting flow to non-critical downstream systems when required

Applications:

Ideal for chemical plants, water treatment, compressed air systems, and process lines requiring precise pressure control for safety and process stability.

Technical Specification

Brand: Z-Tide Co Ltd

Model: RFF

Width: 150.00 mm

Height: 85.00 mm

Depth: 150.00 mm

Weight: 2.00 kg

Valve / Product Type: Pressure Sustaining

Body Material: Stainless Steel

Port Size: 4 inch Flange DN100 , 5 inch Flange DN125 , 1/2 inch Flange DN15, 6 inch Flange DN150 , 3/4 Flange DN20, 1 inch Flange DN25, 11/4 inch Flange DN32, 11/2 inch Flange DN40, 2 inch Flange DN50, 21/2 inch Flange DN65 , 3 inch Flange DN80

Operation: Direct Acting

Pressure: 1 Bar, 1.2 Bar, 1.3 Bar, 1.4 Bar, 1.5 Bar, 1.6 Bar, 2 Bar, 2.5 Bar, 3 Bar, 3.5 Bar, 4 Bar, 4.5 Bar, 5 Bar, 5.5 Bar, 6 Bar, 6.5 Bar, 7 Bar, 7.5 Bar, 8 Bar, 8.5 Bar, 9 Bar, 10 Bar

Seals: NBR, FKM (Viton)

Media: Air, Fluid (Non Aggressive), Fluid (Slight Acid/Alkali), Gases (Non Aggressive), Gases (Slight Acid/Alakli), Oils + Fuels 50cSt Max, Water, Water (RO/Pure/Demin)

Options required: Manual Control

Orifice: 125mm, 150mm, 15mm, 20mm, 25mm, 32mm, 40mm, 50mm, 65mm, 80mm