Direct acting Pressure relief - Sustaining valve type VSM FF | CSA | Philippopoulos s.a.
Direct acting Pressure relief - Sustaining valve type VSM FF | CSA | Philippopoulos s.a.

Direct acting Pressure relief - Sustaining valve type VSM FF | CSA

Direct acting Pressure relief - Sustaining valve type VSM FF | CSA

The Direct acting Pressure relief - Sustaining valve type VSM FF | CSA is designed to keep water systems safe, stable, and efficient. It automatically controls pressure in pipelines, protecting pumps, pipes, and connected equipment from dangerous pressure spikes or drops. This makes it ideal for drinking water networks, irrigation systems, industrial lines, and fire protection loops.

This valve reacts instantly to changes in pressure. When pressure rises above the set point, it opens to release excess water. When pressure falls back to normal, it closes again, keeping your line stable without constant manual adjustment. Because it is direct acting, it responds quickly and reliably, even in demanding conditions.

The VSM FF is compact and easy to install, thanks to its flanged ends and straightforward layout. It does not need complex control panels, external power, or electronics. Once set, it quietly does its job in the background. This keeps maintenance needs low and reduces downtime.

Built from high‑quality, corrosion‑resistant materials, the valve is made to withstand continuous use in clean or slightly dirty water. Internal parts are engineered for long service life, smooth movement, and leak‑free operation. Its robust design helps avoid costly failures and unexpected repairs.

The set pressure can be adjusted to match system requirements. This allows one product to work in different installations and pressure ranges. Clear access to the adjustment components makes fine‑tuning fast and simple for technicians.

Features and Benefits of Direct acting Pressure relief - Sustaining valve type VSM FF | CSA

  • Reliable pressure control: Automatically keeps pressure within safe limits, preventing bursts, leaks, and equipment damage.
  • Direct acting technology: Responds quickly to pressure changes without external power or complex controls.
  • Pressure sustaining function: Maintains minimum upstream pressure to ensure steady supply to critical users.
  • Flanged connection (FF): Simple, secure installation in new or existing pipelines, with excellent sealing.
  • Adjustable set point: Easily adapts to different system pressures, making it suitable for many applications.
  • Low maintenance design: Few moving parts and rugged construction reduce service time and costs.
  • Durable materials: Built to resist corrosion and wear for long‑term performance in water systems.
  • Versatile use: Ideal for potable water networks, irrigation lines, industrial systems, and fire protection circuits.
  • Stable operation: Smooth opening and closing minimize water hammer and vibration in the pipework.
  • User‑friendly setup: Clear access for inspection and adjustment helps installers and operators work quickly.

With the Direct acting Pressure relief - Sustaining valve type VSM FF | CSA, water systems gain dependable protection, consistent pressure, and longer equipment life, all in a compact, easy‑to‑use package.

Standard (Options)
  • DIN
Connection (Options)
  • BSP
Material (Options)
  • Stainless Steel
Pressure Rating (Options)
  • PN 10
  • PN 16
  • PN 25

Datasheet and documents

Description

Pressure relief-sustaining valve in stainless steel

The CSA Mod. VSM FF, with body and internals entirely made in stainless steel machined from a solid bar, sustains and discharges the upstream pressure regardless of variation in flow rates and downstream pressure pulsations. The piston actuated VSM FF will operate in derivation from the line, as a protection from unwanted pressure rises and/or on the line as pressure sustaining valve.

Product features

• Body in stainless steel.

• Cover in nickel plated bronze or stainless steel.

• Internals in stainless steel.

• Pressure balanced piston technology.

Connections

• Threaded BSP F 1". Different on request.

Standard

• Tested and certified according to EN 1074.

Working conditions

• Pressure range: 10-16-25 bar.

• Upstream pressure range: 0.7-7 bar, 1.5-15 bar, higher on request.

• Treated water maximum 70°C, higher temperature on request.

Certifications

Quality e certifications

Quality in its entirety is now an essential requirement for all businesses that aim at gaining and maintaining their position in today's market.

For this reason we have always had the objective of guaranteeing a product managing cycle which, developing a synergy between the various sectors of the company ensures:

  • Quick and precise information.
  • Evaluation of data received and immediate responses.
  • Rigorous control of incoming and outgoing products.

The production cycle, targets a constant improvement of our products, aims at complete customer satisfaction ensures predetermined margins of tolerance establishing production standards so as to guarantee that the semi-finished products reach the next production stage with the required specifications.

All our valves are made of ductile cast iron GJS 450-10 and in absolute compliance with Italian and European standards and are designed to work at a pressure of 25-40 bars. The work is carried out only by means of numerically controlled lathes, mills, horizontal machining units and subsequently examined step-by-step following strict procedures. Internal components of our valves are largely made of stainless steel or other high resistant materials for the maximum prevention of cavitation effects and corrosion.

Painting, pre-treated by sand-blasting grade SA 2,5, is carried out inside a fluidized bed containing epoxy powder, which guarantees maximum surface protection.

All our products are tested under water pressure and certified.

Company policy

CSA deals with the design and production of material for pressure systems for aqueduct, sewage and industrial use and the marketing of all types of valves and solutions for the regulation of pressure systems in the aqueduct, sewerage and industrial sectors.

Mission

Its corporate mission is to be recognized as a structured and leading company for the production of pressure systems for aqueduct, sewage and industrial use.

Our target market consists of around 65% of foreign customers and the remaining 35% of customers in the Italian territory.

The Quality Management System of CSA s.r.l. must guarantee:

  • customer satisfaction through the creation of products according to the required standards and specifications
  • continuous improvement of the effectiveness / efficiency of all the company processes.

For this reason the management of the company together with all the company resources is committed to the continuous improvement of the performance of the company and therefore aimed at managerial, technical and professional growth.

The principles and methodologies of Quality have therefore been an inspiring model in the management and management of the activities of the company, which is constantly engaged in the analysis of the Customer's expectations, to guarantee your maximum satisfaction.

The Quality System is implemented through processes that take place within the company with the collaboration of individual functions and all employees.

Our strengths are:

  1. Technical development of new products suitable for particular applications also at the request of the customer, in addition to a range of standard products on the price list. The development is carried out by our internal Technical Department with attention aimed at complying with sector regulations and national standards;
  2. Assistance to the customer in all phases of order acquisition, order fulfilment and post delivery assistance thanks to commercial and operational personnel able to intervene to solve problems;
  3. Product quality: we guarantee the quality of our products thanks to a careful control of raw materials and selection of qualified suppliers and to the verification of 100% of the products;
  4. Training and periodic training of our staff;
  5. Periodic preventive maintenance of the equipment and calibration of the measuring instruments.

Company Strategies

The company sets the following business strategies for achieving its objectives:

  • Establish contracts with new retailers worldwide to increase the number of customers also in terms of turnover;
  • Development of post-sales assistance service both by telephone and through on-site assistance;
  • Strengthening contacts with the customer through commercial contacts and direct meetings;
  • Careful selection of suppliers through checks on the same and control of the material in acceptance;
  • Warehouse management and production planning in order to meet customer delivery times;
  • Development of new products and obtaining approvals for the marketing of products suitable for contact with water intended for human consumption.

ISO certificates

QNET_9001 Certification    ISO_9001 Certification

Since 1998 all procedures, without exclusion, are certified according to the regulation ISO 9001:2008 by RINA, Registro Italiano Navale.

Standards applied

Quality management

UNI EN ISO 9000:2005

Quality management system - Fundamentals and vocabulary

UNI EN ISO 9001:2015

Quality management system - Requirements

General standards

UNI EN 1563:2012

Founding - Spheroidal graphite cast irons.

UNI EN 545:2010

Ductile iron pipes, fittings, accessories and their joints for water pipelines - Requirements and test methods

UNI 8574-6:1984

Painted products. Test methods. Surface adherence.

UNI EN ISO 2178:1998

Non-magnetic coatings on magnetic substrates - Measurement of coating thickness - Magnetic method

UNI EN 1092-2:1999

Flanges and their joints - Circular flanges for pipes, valves, fittings and accessories, PN designated - Part 2: Cast iron flanges

 

Valves

UNI EN 558:2012

Industrial valves - Face-to-face and centre-to-face dimensions of metal valves for use in flanged pipe systems - PN and Class designated valves

UNI EN 1074 -1:2001

Valves for water supply - Fitness for purpose requirements and appropriate verification tests - Part 1: General requirements

UNI EN 12266-1:2012

Industrial valves - Testing of metallic valves - Part 1: Pressure tests, test procedures and acceptance criteria - Mandatory requirements

 

Air valves

UNI EN 1074-4:2002

Valves for water supply - Fitness for purpose requirements and appropriate verification tests - Part 4: Air valves

 

Control valves

UNI EN 1074-5:2002

Valves for water supply - Fitness for purpose requirements and appropriate verification tests - Part 5: Control valves