CP04-07 - TECVAL,S.L., 2021 all rights reserved.
Back-Seat Needle Valve (MxF)
Working Pressures: 100 | 420 bar (1500 | 6000 PSI)

TECVAL CP-04 needle valves are designed to work with liquids under both high pressure and temperature service. Their back-seat allows the free packing change while the valves are in service. They are used to insulate and avoid damaging instruments on the installation, since they do not cause water hammer, thanks to their design.


Male-Female connections.
Metal-to-metal shut-off.
Easy packing external adjustment.
Free packing change in service.
PTFE packing.
100% tested.


Grafoil packing for high temperatures.  G 
Female - Female connections (FxF).  H 
High working pressure 420 bar (6000 PSI).  I 
AISI-316 T-Bar handle.  M 
Bleed screw in outlet.  P 
Technical data
Max. Pressure Standard pressure: 100 bar (1500 PSI)High pressure: 420 bar (6000 PSI)
Temperatures -20ºC/400ºC (-4ºF/752ºF)
Dimensions 1/4" 1/2"
A Open8992
A Closed8282
C (GAS-BSP)6375
C (NPT)6370
Orifice Size 2.5 2.5
Maximum Cv 0.1 0.1
Order codes

* Dimensions in mm
NÂșPartBrass  LA Carbon Steel  AC AISI-316L  A4 Special alloys 
1 Set screwAISI-304 (1.4301)AISI-304 (1.4301)AISI-304 (1.4301)AISI-304 (1.4301)
2 Handle washerAISI-304 (1.4301)AISI-304 (1.4301)AISI-304 (1.4301)AISI-304 (1.4301)
3 Handle wheelBlack painted aluminiumBlack painted aluminiumBlack painted aluminiumBlack painted aluminium
4 NutBrass (1.7660)F-112 (1.1158)AISI-316L (1.4404)AISI-316L (1.4404)
5 GlandBrass (1.7660)F-112 (1.1158)AISI-316L (1.4404)AISI-316L (1.4404)
6 PackingP.T.F.E.P.T.F.E.P.T.F.E.P.T.F.E.
7 BonnetBrass (1.7660)F-112 (1.1158)AISI-316L (1.4404)Special alloy
8 StemAISI-316L (1.4404)AISI-316L (1.4404)AISI-316L (1.4404)Special alloy
9 BodyBrass (1.7660)F-112 (1.1158)AISI-316L (1.4404)Special alloy
Special alloys

Among the wide range of alloys existing, TECVAL has selected those considered by our customers as most suitable, which we stock to ensure a quick and effective supply. Whether you do not find the required alloy or need further information about our exotic alloys valves and fittings, please address your inquiry to our Technical Department.

AISI-316Ti (1.4571)  A6 
AISI-904L (1.4539)  A9 
Duplex (1.4462)  AD 
SuperDuplex (1.4410/1.4501)  AS 
254-SMO (1.4547)  AV 
Titanio Gr.2 (3.7034)  TI 
Hastelloy C-276 (2.4819)  HA 

Ordering information

References are formed by three parts:

 Valve Code 
Look for it in the order codes chart on the previous page.
..  Option/s 
-If required, add the code/s from the options section on the previous page (in alphabetical order)
...  Material 
-Look for the code on the materials chart.

An example of valve and two options:

Needle valve CP-04 1/2"BSP AISI-316 with grafoil packing and T-bar handle:
 1604   GM   A4  The reference to place the order is: 1604GMA4

100% tested in accordance to API STANDARD 598, each valve is tested to check the leakage in the seats and packing. Upon request, the corresponding materials and test certificates can be delivered with the valve.


All TECVAL valves are supplied packed in individual polyethilene airtight bags. End screw connections are protected with polyethilene caps. Everything is 100% recyclable.


Adjustment of the packing may be necessary during the working life of the valve. The operation consists of turning the nut (4) clockwise.
Valves with long no-working period may have a harder initial operating torque.

C/Colom, 519 - Pol.Can Parellada - 08228-TERRASSA - Barcelona - SPAIN | Tel: +34 938 280 055 | email: tecval@tecval.es