TLV DR8-P and DR8-EP are compact, direct-acting pressure reducing valves designed specifically for clean steam applications. They are constructed from forged stainless steel with wetted parts manufactured from highly durable, corrosion-resistant materials, including USP or FDA-compliant rubber and resin. These valves are widely used on autoclaves, sterilizers, humidifiers, and other equipment within the pharmaceutical, medical, and food industries.

The angle-type structure and internal buff-polishing minimize areas where condensate can accumulate, preventing contamination. The valve features a double-guided mechanism for stable operation and offers a high flow rate for its class. The internal parts are easily accessible, simplifying online maintenance and reducing cleaning costs.

Features

• Wetted parts are stainless steel and USP or FDA compliant rubber or resin with high durability and corrosion resistance.
• Double-guided valve for stable operation.
• Internal buff-polishing with an additional interior and exterior electro-polish option to 0.4 μm Ra (DR8-EP models) for improved resistance to bacterial growth.
• Easy to operate and adjust.
• Easy access to internal parts simplifies cleaning and reduces maintenance cost.

Specifications

Model	DR8-3P	DR8-6P	DR8-3EP	DR8-6EP
Connection	Clamp End	Clamp End	Clamp End	Clamp End
Size	DN 15, 20, 25, 38	DN 15, 20, 25, 38	DN 15, 20, 25, 38	DN 15, 20, 25, 38
Max Operating Pressure (PMO)	8 barg	8 barg	8 barg	8 barg
Max Operating Temperature (TMO)	175°C	175°C	175°C	175°C
Primary Pressure Range	2 to 4 barg	4 to 8 barg	2 to 4 barg	4 to 8 barg
Adjustable Pressure Range	0.18 to 3 barg	2.7 to 6 barg	0.18 to 3 barg	2.7 to 6 barg
Minimum Adjustable Flow	20 kg/h	20 kg/h	20 kg/h	20 kg/h

WARNING

Install properly and DO NOT use this product outside the recommended operating pressure, temperature and other specification ranges. Improper use may result in damage or malfunctions.

Configuration and Parts

No.	Name	Material
1	Body	Forged Stainless Steel A182 Gr.F316L
2	Valve	Stainless Steel SUS316L
3	Diaphragm	Silicone Rubber (USP/FDA compliant)
4	Protective Sheet	Fluorine Resin (USP/FDA compliant)
5	Spring Housing	Forged Stainless Steel A182 Gr.F316L

Installation Guidelines

Make sure the DR8 is installed vertically so that the arrow mark on the body matches the direction of steam flow, the outlet is horizontal, and the adjustment screw section faces up. Allowable inclination is 10 degrees in the fore-aft direction and 15 degrees side to side.

If an ON/OFF valve (solenoid or motorized) is required to stop steam supply, install it at the inlet side of the DR8 to prevent chattering and potential damage. A control valve installed between the DR8 and the equipment may raise pressure when closed; therefore, a safety valve should be installed downstream of the control valve.

Sizing and Flow Graph