SR7 Series stainless steel back pressure valve

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SR7 Series stainless steel back pressure valve

The SR7 functions completely differently from ordinary pressure regulators; it is a diaphragm-type back pressure valve used to regulate upstream pressure. When the internal system pressure exceeds the user-preset opening point, the SR7 precisely opens to release or backflow, thus protecting valuable upstream equipment from overpressure damage. Its pressure control sensitivity is extremely high. It uses a 316L stainless steel body and a Hastelloy diaphragm, with a CV value of 0.08, making it ideal for installation at the end of process control loops and gas analysis sampling systems as a pressure-stabilizing bypass. In laboratory automation systems, the addition of the SR7 effectively constructs a closed-loop pressure control system and is an indispensable precision component for achieving constant pressure operation in gas flow paths.

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Series

Body Ports

Outlet Pressure

Inlet connector

Outlet Connector

Options

SR7

A

G

00 

P

00 

SR7L

(316L)

SR7B

(Copper electroplating)

A

G:0-250psi

1:0-100psi

K:0-50psi

L:0-25psi

00:1/4"NPT(F)

01:1/4"NPT(M)

10: 1/8 "card sleeve connector

11: 1/4 "card sleeve connector

12: 3/8 "card sleeve connector

Other forms of connectors are available for selection

00:1/4"NPT(F)

01:1/4"NPT(M)

10: 1/8 "card sleeve connector

11: 1/4 "card sleeve connector

12: 3/8 "card sleeve connector

Other forms of connectors are available for selection

P: Panel installation

About Us
Ningbo Keshengli Stainless Steel Valve Co., Ltd.
Ningbo Keshengli Stainless Steel Valve Co., Ltd.

Our company specializes in the manufacturing and sales of stainless steel pipe fittings and valves in national (GB), American (ANSI/ASME), and British (BS) standards. We are equipped with advanced CNC machining centers, material testing and heat treatment facilities, a skilled technical team, and a robust production workforce. With a sound quality management system and excellent after-sales service, we sincerely serve customers worldwide.

Our main products include: ferrule-type fittings, threaded fittings, instrument fittings, instrument needle valves, instrument ball valves, ferrule needle valves, ferrule ball valves, compact high-pressure instrument needle valves, compact high-pressure instrument ball valves, and high-pressure check valves. The primary material is SS316 stainless steel. These products are widely used in petrochemical, petroleum, electric power, pharmaceutical, food, papermaking, marine, and general machinery industries.

We strictly control product quality at every stage and are committed to delivering superior quality through advanced technology and professional management. Adhering to the business philosophy of "Quality First, Customer Supreme, Integrity Foremost," we strive to build the "NB-KSL" brand image, better serve our customers, and work together with you to create a prosperous future.

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