Key Features

Direct-acting pressure reducing valve
Automatic downstream pressure control
Balanced piston and diaphragm design
Stable outlet pressure regulation
Fast response to changing flow demand
1/2" to 2" BSPT port sizes
Optional NPT threads available
Heavy-duty bronze construction
Compact space-saving design
Maximum inlet pressure 12 Bar
Pressure tested to 21 Bar
Outlet pressure adjustable to 9 Bar
Alternative pressure ranges available
Flow capacity up to Cv 28
Pressure gauge included as standard
NBR seals as standard
EPDM or FKM seal options
Suitable for compressed air
Suitable for water systems
Suitable for fluids up to 40 cSt
Media temperature -15°C to +60°C
Mountable in any position
Ideal for OEM and retrofit systems

Datasheets

Description

Bronze Direct-Acting Pressure Reducing Valve – Z-Tide Industrial RDTB Series

The Z-Tide Industrial RDTB Series is a compact direct-acting pressure reducing valve designed to automatically reduce and maintain stable downstream pressure in compressed air, water and compatible fluid systems.

Manufactured from heavy-duty bronze with a balanced piston and diaphragm design, the RDTB provides accurate outlet pressure regulation with fast response to changing flow demand. The balanced pressure system helps maintain the selected downstream pressure despite normal variations in inlet pressure.

Available from 1/2" to 2" BSPT with optional NPT threads, the RDTB offers flow capacities up to Cv 28 and is supplied with a pressure gauge for simple adjustment and continuous outlet pressure monitoring.

Its compact construction makes it particularly suitable for OEM machinery, compressed air installations, industrial water systems, cooling circuits and general plant pressure regulation.

Valve function & operation

Function:

Direct-acting pressure reducing valve

Automatic downstream pressure control

Operating principle: Balanced piston and diaphragm

Automatically maintains a constant outlet pressure

Pressure gauge included as standard

Port sizes: ½", ¾", 1", 1¼", 1½" and 2" BSPT

Optional threads: NPT

Mounting position: Any position

Pressure & regulation

Maximum inlet pressure: 12 Bar

Pressure tested: 21 Bar

Outlet pressure adjustment ranges:

2 to 5 Bar

4 to 9 Bar

Additional pressure ranges available on request

Maximum media temperature: +60°C

Minimum media temperature: -15°C

Maximum media viscosity: 40 cSt

Flow capacity (Cv): 2.5 to 28

(According to valve size)

Construction & materials

Body: Bronze

Upper cover: Bronze

Piston: Bronze

Shaft: Stainless steel

Spring: Spring steel

Spring cover: Polyamide 66

Standard seals: NBR

Optional seals:

EPDM

FKM (Viton)

Pressure gauge: Included

Media compatibility

✓ Compressed air

✓ Water

✓ Fluids up to 40 cSt compatible with the valve materials

Pressure Control & Performance

✓ Balanced piston and diaphragm provide stable downstream pressure control

✓ Automatically regulates outlet pressure as system demand changes

✓ Helps compensate for normal variations in inlet pressure

✓ Fast response to changing flow conditions

✓ Pressure gauge allows easy adjustment and monitoring

✓ Flow capacity from Cv 2.5 to Cv 28 according to valve size

✓ Compact construction suits restricted installation spaces

✓ Can be installed in any mounting orientation

✓ Heavy-duty bronze construction provides reliable industrial service

Applications

Compressed air systems

Industrial water distribution

OEM machinery

General plant services

Process water systems

Cooling water circuits

Equipment pressure regulation

General industrial fluid control

Manufacturing quality

Manufactured using a heavy-duty bronze body with a balanced piston and diaphragm assembly, the Z-Tide Industrial RDTB Series has been engineered for reliable long-term pressure regulation in industrial environments. The balanced pressure system automatically maintains a stable downstream pressure regardless of normal inlet pressure fluctuations, while the combined diaphragm and piston design provides rapid response with minimal leakage and accurate outlet pressure control. The compact construction allows installation in confined spaces without compromising performance, making the RDTB Series an excellent choice for both new equipment and retrofit installations.

Ordering information

Simply select the required port size, outlet pressure range and seal material before adding the valve to your basket. Optional NPT threads, EPDM or FKM (Viton) seals and alternative pressure adjustment ranges are available on request.