Water air valve - Combination air valve with five functions type LYNX 3F - RFP - AS | CSA | Philippopoulos s.a.
Water air valve - Combination air valve with five functions type LYNX 3F - RFP - AS | CSA | Philippopoulos s.a.

Water air valve - Combination air valve with five functions type LYNX 3F - RFP - AS | CSA

CSA LYNX 3F RFP-AS Five-Function Air Valve

The CSA LYNX 3F RFP-AS is a single-chamber combination air valve designed for treated water networks. It provides pressurized air release, air intake during pipeline draining or rupture, and controls transient phenomena associated with high air discharge velocities.

RFP and AS Functionality

The integrated RFP-AS mechanism limits rapid air expulsion before the water column arrives, reducing abrupt closure and mitigating hydraulic surge risks during filling, pump start-up, or transient operation.

Technical Specifications

  • Single-chamber body: ductile cast iron
  • Cover: ductile cast iron
  • Screen: stainless steel
  • Connections: flanged DN 50–DN 250 or threaded 1"–2" BSP F
  • Flange standards: EN 1092-2, ANSI 150, AS
  • Operating pressure: up to 40 bar
  • Minimum pressure: 0.2 bar
  • Medium: treated water up to 60°C
  • Design standards: EN 1074-4, AWWA C-512

Applications

  • Main water transmission pipelines
  • Pumping stations with frequent starts
  • High points in distribution networks
  • Filling and draining lines
  • Pipelines with a history of hydraulic surges

Selection Criteria

The LYNX 3F RFP-AS is selected where combined air release and surge mitigation are required for higher air flow rates. Sizing is based on pipeline DN, pressure class (PN), filling/draining flow rates, and hydraulic transient analysis.

FAQ

What is the main difference from LYNX 3F-RFP?
The RFP-AS integrates both anti-surge and anti-slam assemblies.

Which media is it suitable for?
For treated water up to 60°C.

When is hydraulic analysis required?
For high filling velocities, significant elevation differences, or pump stations with rapid flow changes.

Standard (Options)
  • DIN
  • ANSI
Connection (Options)
  • BSP
  • Flanged
Material (Options)
  • Ductile Cast Iron
Pressure Rating (Options)
  • PN 10
  • PN 16
  • PN 25
  • PN 40

Datasheet and documents

Description

Combination air valve with five functions

The CSA surge dampening, anti-slam automatic air valve Mod. LYNX 3F RFP has been designed to allow the release of air pockets accumulated in working conditions, the entrance of large volumes of air in case of pipe draining or bursts and to prevent pipeline damages coming from pressure transients, associated with high air outflow velocities.

Product features

• Single chamber body in ductile cast iron.

• Cover in ductile and scree in stainless steel as a standard execution.

• Designed in compliance with EN-1074/4 and AWWA C-512.

Flanges

• Connections: flanges from DN 50 to 250 mm, threaded 1" - 2" BSP F.

 • Flanges drilling: EN1092/2, ANSI 150, AS. Others on request.

Standard

• Designed in compliance with EN-1074/4 and AWWA C-512

Working conditions

• Treated water max. 60°C.

• Max. pressure 40 bar.

• Min. pressure 0,2 bar. Lower 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