What is the difference between the standard DCV41 and the Food+ variant?

The Food+ variant includes a Declaration of Compliance certifying that wetted materials meet EC 1935:2004, EU 10/2011, and FDA CFR Title 21 requirements for food contact. Material certification for all wetted parts is available at extra cost.

Can the DCV41 be installed in a vertical pipeline?

Yes. Spring-loaded versions can be installed in any orientation. If you require lower opening pressure, the valve can be supplied without a spring and must be installed in vertical pipelines with bottom-to-top flow.

Which seat material should I select for boiler feedwater duty?

For boiler feedwater applications, specify the heavy duty spring (700 mbar opening pressure) with an EPDM soft seat. This combination provides reliable shut-off under the higher differential pressures typical of feedwater systems.

Are spare parts available for the DCV41?

No. The DCV41 is a non-maintainable valve; no spares are available. The valve should be replaced as a complete unit when service life is reached.

What certification documentation can be supplied with the valve?

EN 10204 3.1 material certification is available. All certification and inspection requirements must be stated at the time of order placement.

SPIRAX SARCO · CHECK VALVES

Spirax Sarco DCV41 Food+ Austenitic Stainless Steel Disc Check Valve

Name: Spirax Sarco DCV41 Food+ Austenitic Stainless Steel Disc Check Valve
Brand: Spirax Sarco

Spirax Sarco DCV41 Food+ stainless steel disc check valve for steam, condensate & food-grade applications. PN50 rated, ½" to 2" sizes.

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Overview

The Spirax Sarco DCV41 Food+ is an austenitic stainless steel disc check valve engineered to prevent reverse flow in process lines, steam systems, condensate lines, and hot water circuits. Constructed from ASTM A351 CF3M stainless steel, it delivers reliable performance in demanding industrial environments where corrosion resistance and hygienic operation are critical.

This disc check valve operates automatically—fluid pressure opens the valve, and the internal spring ensures rapid closure as soon as flow ceases, preventing backflow before it occurs. The DCV41 is available with screwed BSP, screwed NPT, or socket weld end connections to suit various piping configurations.

The Food+ variant is specifically certified for food and beverage processing applications, complying with EC 1935:2004, EU 10/2011, and FDA CFR Title 21 regulations. For oil and gas applications, a Viton soft seat option is available; for water service, an EPDM soft seat provides bubble-tight shut-off conforming to EN 12266-1 Rate A. The standard metal seat version meets EN 12266-1 Rate E shut-off requirements.

Key Features

Austenitic stainless steel construction (ASTM A351 CF3M body and seat) for corrosion resistance
Food-grade certification (EC 1935:2004, EU 10/2011, FDA CFR 21) on Food+ variants
Soft seat options (Viton for oil/gas, EPDM for water) for bubble-tight shut-off (EN 12266-1 Rate A)
Heavy duty spring option (700 mbar opening pressure) for boiler feedwater applications
High temperature spring option for operation up to 400°C
Available without spring for vertical bottom-to-top installations requiring low opening pressure
Complies with EU Pressure Equipment Directive and UK Pressure Equipment (Safety) Regulations
EN 10204 3.1 certification available on request

Specifications

Parameter	Value
Sizes	½", ¾", 1", 1¼", 1½", 2"
End Connections	Screwed BSP (BS 21), Screwed NPT (ASME B1.20.1), Socket Weld (ASME B16.11 Class 3000)
Body Design Conditions	PN50
Max Allowable Pressure (PMA)	49.6 bar g @ 38°C
Max Allowable Temperature (TMA)	400°C @ 29.4 bar g
Max Operating Temp — Metal Seat (Standard Spring)	300°C
Max Operating Temp — Metal Seat (High Temp Spring)	400°C
Max Operating Temp — Viton Seat	205°C
Max Operating Temp — EPDM Seat	120°C
Min Operating Temperature	-40°C (EPDM), -29°C (Metal), -25°C (Viton)
Body Material	Austenitic Stainless Steel ASTM A351 CF3M
Disc Material	Austenitic Stainless Steel ASTM A276 316
Spring Material	SS BS 2056 316 S42 (Std/Heavy Duty), Nimonic 90 (High Temp)
Max Cold Hydraulic Test Pressure	76 bar g
Shut-off Standard — Metal Seat	EN 12266-1 Rate E
Shut-off Standard — Soft Seat	EN 12266-1 Rate A
Size	½"	¾"	1"	1¼"	1½"	2"
Kv	4.4	7.5	12	30	35	35
Size	½"	¾"	1"	1¼" to 2"
mbar	25	22.5	20	20

Applications

The DCV41 Food+ disc check valve is suited for a wide range of industrial applications:

- Steam and condensate systems — preventing reverse flow in steam mains, condensate return lines, and flash vessels - Boiler feedwater systems — heavy duty spring variant handles higher differential pressures - Food and beverage processing — Food+ certification ensures compliance with hygiene regulations - Pharmaceutical and dairy plants — stainless steel construction meets sanitary requirements - Hot water and HVAC systems — EPDM seat option for water service up to 120°C - Oil and gas processing — Viton seat for hydrocarbon compatibility - Chemical process lines — corrosion-resistant materials for aggressive media

Frequently Asked Questions

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Contact PC Engineering for pricing, availability, and technical support for the Spirax Sarco DCV41 Food+ Stainless Steel Disc Check Valve. Call us or fill in our inquiry form — our engineers will respond within 24 hours.

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